PHYSICIAN EMPLOYMENT AGREEMENT

     THIS PHYSICIAN  EMPLOYMENT AGREEMENT (the "Agreement") dated as of March 4,
1998 (the "Execution  Date"),  is entered into by and between  KENNETH  TRIMMER,
M.D.,  P.A., a Texas  professional  association  and its  successors and assigns
("KTPA"), and KENNETH J. TRIMMER, M.D., (the "Physician" or "Dr.
Trimmer").

                             PRELIMINARY STATEMENTS

     One day after the execution and delivery of this Agreement,  KTPA,  Michael
Cavenee, M.D., P.A., also a Texas professional association ("MCPA", collectively
with KTPA, the "Company"); each of the shareholders of the Company, and Sheridan
Healthcorp, Inc., a Florida corporation ("Sheridan") have executed and delivered
a Management  Services  Agreement  (the "MSA")  pursuant to which  Sheridan will
manage  all of the  business  of the  Company  except the  provision  of medical
services. Capitalized terms not defined in this Agreement have the meaning given
to them in the MSA.

     KTPA  desires  to employ  the  Physician  and the  Physician  desires to be
employed with KTPA, on the terms and subject to the conditions contained in this
Agreement.

     In  consideration  of the parties'  promises  and mutual  covenants in this
Agreement, KTPA and the Physician agree as follows:

                                   AGREEMENT

     1. Employment.  As of the Commencement Date, KTPA employs the Physician and
the Physician accepts the employment upon this Agreement's terms and conditions.

     2. Term of Employment.  Unless  terminated  earlier under the provisions of
this  Agreement,  the initial term of employment of the Physician shall be for a
period of five (5) years (the "Initial Term"), commencing on March 5, 1998, (the
"Commencement  Date") and  expiring  on March 4, 2003 (the  "Expiration  Date").
Unless terminated  earlier under the provisions of this Agreement,  and provided
that both (i) the  Physician  shall be less than sixty five (65) years of age on
the Expiration  Date of the Initial Term, or a Renewal Term (as defined  below);
and, (ii) the Company has met the Earnings  Threshold (as defined  below),  then
the Physician may elect,  in his or her sole  discretion,  to extend the Initial
Term or a Renewal Term for an  additional  period of three (3) years (a "Renewal
Term") by sending a written  notice (a  "Renewal  Notice")  to KTPA at least One
Hundred Eighty (180) days prior to the expiration of the Initial Term or Renewal
Term then in effect,  as the case may be. Any  Renewal  Terms  shall be upon the



same terms and conditions as contained in this Agreement, except where otherwise
specified  in this  Agreement  or by the parties in writing.  Unless  terminated
earlier under the provisions of this  Agreement,  this Agreement shall terminate
upon the Expiration  Date of the Initial Term or Renewal Term then in effect (i)
if the  Physician  elects  not to  extend  the term of the  Agreement  by timely
sending KTPA a Renewal  Notice;  (ii) if the  Physician is older than sixty five
(65) years of age on the Expiration  Date of the Initial Term or a Renewal Term,
as the case may be; or (iii) in KTPA's sole  discretion,  if the Company has not
met the Earnings  Threshold as of the date the Renewal  Notice is received.  For
purposes of this Agreement,  any references to the "Term" of the Agreement shall
be to the Initial Term and any Renewal Terms then in effect.

     For  purposes of this  Agreement,  a Contract  Year shall be defined as the
twelve (12) month period  commencing on the Commencement  Date of this Agreement
(or on its  anniversary  in  subsequent  years) and ending on the day before the
anniversary of the Commencement  Date.  During the term of the MSA, the Earnings
Threshold shall be met when the aggregate amount of all monthly  Management Fees
paid to Sheridan  pursuant to Article IV of the MSA during each Contract Year of
the Initial Term or Renewal Term then in effect is equal to at least Two Million
Five Hundred Twenty Five Thousand Dollars  ($2,525,000.00)  (the "Base Amount").
In the event that the MSA is terminated for any reason,  the Earnings  Threshold
shall be met if the net  earnings  of the  Company  for the most recent four (4)
quarters for which financial  information is available on the expiration date of
the Initial Term or Renewal Term then in effect (after  payment of any physician
base  compensation  pursuant to Section 3(a)(i) of this Agreement or pursuant to
any other written  arrangement with any other physician employee of the Company,
but before payment of any Incentive  Compensation  pursuant to Section 3(a)(iii)
of this  Agreement or pursuant to any other written  arrangement  with any other
physician employee of the Company) is at least equal to the Base Amount.

     3.  Compensation.  During the Term,  the Physician  shall be compensated as
follows:

          (a)     Monetary Compensation.

               (i) Base Compensation.  Provided that this Agreement has not been
terminated,  KTPA shall pay to the Physician as compensation for the performance
of his or  her  duties  under  this  Agreement,  base  compensation  (the  "Base
Compensation")  at an annual rate of Two Hundred Thousand Dollars  ($200,000.00)
during the Initial Term and any Renewal  Terms (or the pro rata portion  thereof
for periods less than a full Contract Year).

                    The Physician shall be paid Base  Compensation  bi-weekly in
substantially  equal  installments,  or at more  frequent  intervals as KTPA may
determine, subject to all applicable withholdings, set offs, and taxes.

               (ii) Incentive  Compensation during the Term of the MSA. Provided
that this  Agreement has not been  terminated,  during each Contract Year of the
Term, and provided the MSA has not been  terminated,  to the extent permitted by
law,  KTPA shall pay to the Physician  incentive  compensation  (the  "Incentive
Compensation") in an amount equal to the Physician's Share (as defined below) of
any amounts  paid to the Company  pursuant to Sections  4.1(d) and 4.1(e) of the
MSA. The  Physician's  Share shall be equal to the percentage set forth opposite
the Physician's name on Schedule 3(a)(ii) attached to this Agreement, as amended
by written agreement of the parties from time to time.


                                       2


               (iii)  Incentive   Compensation  upon  termination  of  the  MSA.
Provided that this Agreement has not been  terminated,  upon  termination of the
MSA and to the extent  permitted by law, at the end of each Contract Year,  KTPA
shall pay to the  Physician  as  Incentive  Compensation  an amount equal to the
Physician's Share of the Additional  Compensation  Amount (as defined below), if
any, and  Physician's  Share of the Excess Net Earnings (as defined  below),  if
any. For purposes of this Agreement, the Additional Compensation Amount shall be
equal to the Net Earnings (as defined below) which are above the Base Amount, up
to a maximum of Two Hundred Thirty Thousand Dollars  ($230,000.00)  For purposes
of this  Agreement,  Excess Net Earnings for any Contract Year shall be equal to
Forty percent  (40%) of the Net Earnings (as defined  below) which are above the
Base Amount after payment of any Additional  Compensation  Amount.  Net Earnings
means the net  earnings of the Company for the most recent four (4) quarters for
which  financial  information is available at the expiration  date of a Contract
Year as  calculated  by Sheridan  according  to  generally  accepted  accounting
principles  applied on a consistent basis as provided by the FASB, after payment
of any base  compensation,  but before payment of any incentive  compensation to
the Physician or any shareholders or physician employees of the Company.

                    Any  Incentive   Compensation   payable   pursuant  to  this
Agreement  shall be paid to the Physician  within ninety (90) days of the end of
each Contract Year, or as soon as reasonable practicable thereafter,  subject to
all  applicable  withholds,  set offs and taxes.  In the event this Agreement is
terminated  during a Contract  Year,  the  Physician  shall receive the pro rata
portion of his or her Incentive Compensation  attributable to the portion of the
Contract Year during which the Physician provided services to KTPA.

          (b) Physician  Benefit Plans.  During the Term, the Physician shall be
entitled to  participate  in or benefit from the benefit plans and policies that
are  afforded to other  similarly  situated  KTPA or physician  employees.  KTPA
retains the right to terminate or alter in its sole and absolute discretion, any
benefit plans or policies from time to time subject to the terms of the MSA.

          (c) Vacation and Sick Days. The Physician  shall accrue five (5) weeks
paid  vacation  time during each twelve (12) month  calendar  year or a pro rata
amount for periods less than a full  calendar  year.  The  Physician  shall also
accrue six (6) paid sick days during each calendar year or a pro rata amount for
periods  less than a full  calendar  year.  Vacation and sick days shall be used
within the calendar  year, and vacation days shall only be used at the times and
intervals  mutually agreed upon between  Physician and KTPA. The Physician shall
not be entitled to any  additional  compensation  for unused  vacation  and sick
days.  Additionally,  any time spent by Physician on (i) religious holidays;  or
(ii)  education,   through  the  attendance  of  lectures,   seminars  or  other
educational activities,  at a time when Physician would otherwise be required to
provide  services  to KTPA  shall be  considered  vacation  time.  Physician  is
expected to use his or her vacation  time for  fulfillment  of all of his or her
CME requirements.

          (d) Licenses,  Staff,  Association and Society Fees.  During the Term,
KTPA  shall  pay  Physician's   applicable   hospital  medical  staff  fees  and
professional  license  fees  which  enable  Physician  to  fulfill  his  or  her
obligations  under this  Agreement.  During  the Term,  KTPA shall pay up to One
Thousand Five Hundred  Dollars  ($1,500.00)  per calendar  year of  professional
association and societies dues and membership fees selected by the Physician.


                                       3


          (e)     Professional Liability Insurance.  During the Term, the
following will apply:

               (i) KTPA shall insure,  at its cost,  the Physician  under KTPA's
current professional liability policy ("Physicians' Insurance") in the amount of
$1,000,000.00  for each claim and  $3,000,000.00  annual aggregate limit and the
costs for such insurance shall be borne by KTPA;

               (ii)  in  the  event  KTPA  determines  to  provide  professional
liability insurance for the Physician from other than Physicians' Insurance,  at
its costs,  KTPA agrees to provide  coverage limits no less than as specified in
subsection (i) above;

               (iii) subject to Section  3(e)(i) and 3(e)(vi),  KTPA may, in its
absolute sole discretion, at any time during the Term, cancel, continue, modify,
change or substitute the  malpractice  insurance  policy  coverage for Physician
and/or KTPA for  Physician's  provision of medical  services while acting in the
scope of his or her  employment  pursuant  to the terms and  conditions  of this
Agreement  which  was  obtained  pursuant  to  KTPA's   obligations  under  this
Agreement;

                 (iv) Physician shall immediately execute and deliver, in strict
accordance  with KTPA's  written  instructions,  all documents  and  instruments
necessary to effectuate the provisions of this Section;

               (v) Physician agrees to act in full accordance with the terms and
conditions of any and all malpractice insurance policies,  copies of which shall
be provided to the Physician; and,

               (vi) subject to Section 3(e)(i) and 3(e)(iii), KTPA will obtain a
continuous  claims  made  professional   liability  insurance  policy  to  cover
Physician pursuant to the terms of this Agreement.  In the event Physician is no
longer  employed  by KTPA,  KTPA  shall,  at KTPA's  expense,  continue to cover
Physician for medical  malpractice  claims  arising out of his or her employment
under this  Agreement  through the  applicable  statute of  limitations  by: (i)
continuing the continuous claims made professional  liability  insurance policy;
(ii)  purchasing a replacement  continuous  claims made  professional  liability
insurance  policy with  retroactive  coverage which does not create any lapse in
coverage;  or, (iii) purchasing appropriate tail coverage to meet its obligation
under this subparagraph.

          (f)  Withholdings.  KTPA shall withhold from any compensation or other
benefits  payable  under this  Agreement,  or arrange  for the  payment  of, any
federal,  state, city or other taxes as shall be required pursuant to any law or
governmental regulation or ruling.


                                       4



          (g)  Patient  Referrals.  The  parties  agree  that the  benefits  and
compensation  paid to Physician  under this  Agreement are fair market value for
services  rendered and do not  require,  are not payment to induce nor are in an
any way contingent  upon, the referral of patients or any other  arrangement for
the  provision  of any item or  service  offered  by KTPA.  The  parties to this
Agreement  agree that no payments  made under this  Agreement are made in return
for or to induce  any  person  to:  (i) refer an  individual  to anyone  for the
furnishing  or  arranging  for the  furnishing  of items or  services  for which
payment  may be made in whole or in part under  Medicare or  Medicaid;  or, (ii)
purchase,  lease,  order or  arrange  for or  recommend  purchasing,  leasing or
ordering any good,  facility,  service or item for which  payment may be made in
whole or in part under Medicare or Medicaid.

     4.     Employment Duties.

          (a) The  Physician  agrees  during  his or her  employment  under this
Agreement to: (i) provide medical  services on behalf of KTPA as a duly licensed
physician  under the laws of the State of Texas;  (ii) keep all  records  as are
necessary  and  reasonably  required  by  KTPA  to  assist  KTPA  in the  proper
administration  and  management  of its business;  and,  (iii) perform any other
duties and  assignments  relating to the business of KTPA,  its  Affiliates  (as
defined below) and subsidiaries,  as KTPA's Board of Directors or its delegatees
reasonably  directs,  provided further that those duties or assignments shall be
reasonably  related to the Physician's  expertise and experience  ((i), (ii) and
(iii)  shall  be  collectively,  the  "Physician  Duties").  In all  events  the
Physician's  duties shall be reasonable  and Physician  shall not be required to
breach any of his ethical  responsibilities  as defined in the American  Medical
Association's  Code of Conduct.  During the Term,  the Physician  shall,  except
during  vacation  periods,  approved  leaves  and  periods  of  illness,  devote
sufficient  business  time and  attention to the  performance  of the  Physician
Duties under this  Agreement and shall use his or her best  efforts,  skills and
abilities to perform his or her duties in accordance  with applicable laws which
are  brought  to his or her  attention  by  KTPA  and  to  promote  KTPA's  best
interests.

          (b)  Call.  The  Physician  agrees  and  acknowledges  that his or her
services may be necessary on evenings and  weekends,  and shall be available for
weekday and weekend  call in  accordance  with call  policies  and  schedules as
established by KTPA. Any call coverage involving physicians not employed by KTPA
may only be arranged with the prior written consent of KTPA, after  verification
of  the  credentials,   malpractice  history  and  insurance  coverages  of  the
non-employee physicians who are proposed to be providing call coverage.

          (c)  Access  to  Records.  Upon  written  request,  and to the  extent
required by Title 42 of the United  States Code,  Section  1395(x)(v)(1)(I),  as
amended,  Physician  agrees to make  available  to the  Secretary  of the United
States Department of Health and Human Services or the Comptroller General of the
United States, or any of their duly authorized representatives,  this Agreement,
all documents and records necessary to certify the nature and extent of services
provided by Physician under this Agreement.


                                       5


          (d) Licensure and  Certification.  The Physician agrees as a condition
of his or her employment under this Agreement to maintain all required state and
governmental  licenses,  certifications and authorizations  necessary to perform
his or her obligations under this Agreement.

          (e)  Activities.  KTPA  shall  reimburse  Physician  for any  expenses
incurred by the Physician, which were reasonable business expenses,  incurred in
conformity  with written KTPA  policies and after  submission  of  documentation
regarding those expense as required by KTPA policies.

          (f)  Medical  Records.  With  respect  to all  services  performed  by
Physician  under this  Agreement,  the Physician  agrees to complete all medical
records  with  respect to  patient  care in  accordance  with the  policies  and
procedures of KTPA and further agrees to complete in a timely manner,  all forms
and ancillary records which may be required by KTPA policy,  third-party  payors
or others in connection with patient care.

          (g) Medical  Staff  Privileges.  During the Term as requested by KTPA,
Physician  shall  become  a member  of the  medical  staff  and  maintain  other
privileges (the  "Privileges")  at any hospital,  ambulatory  surgical center or
other facility where KTPA provides medical  services in the Dallas  Metropolitan
Area at the locations listed on Schedule 4 (g).

          (h)  Non-Discrimination.  The  Physician  agrees  not to  discriminate
against patients because of race,  color,  sex, age,  religion,  payor or health
status.

          (i) HMOs, IPAs,  PPOs, and Employer Groups,  Etc. For and on behalf of
Physician,  KTPA shall have the sole and exclusive  right and authority to enter
into  contractual  relationships  with HMOs,  IPAs,  PPOs,  and employer  groups
(collectively  "Third Party  Payor(s)"),  or other  managed  care  arrangements.
Physician  shall  provide the same  quality of care to all  patients  from these
sources as is  provided  to other  patients  of KTPA.  Upon  request  from KTPA,
Physician  shall execute all Third Party Payor documents as "provider" if deemed
necessary  or  advisable by KTPA.  Physician  shall not contract  with any Third
Party Payors without KTPA's prior written consent in each instance.

          (j)     Miscellaneous.

               (i) The Physician  further agrees and acknowledges that he or she
shall comply with and follow all reasonable written policies,  standards,  rules
and  regulations  established  by KTPA  from  time to  time  in  performing  the
Physician  Duties under this Agreement which are provided to the Physician,  and
agrees  to be bound  by and  comply  with  the  terms  and  conditions  of other
agreements  to which  KTPA is a party to, or to which it may  become a party to,
with hospitals,  ambulatory surgical centers,  insurance companies,  third party
payors and other providers of medical  services in connection with the provision
of medical services.


                                       6


               (ii) Except as provided in Schedule 4(j)(ii), the Physician shall
not, during his or her employment under this Agreement,  render medical services
(except for  non-compensated  good  samaritan  emergencies),  or expert  witness
testimony or legal medical  consulting  services or any other related  services,
for any other person or entity as an employee,  agent, independent contractor or
otherwise .

               (iii) Without  KTPA's prior written  consent  exercisable  in its
reasonable  discretion,  the Physician  shall not,  during his or her employment
under this  Agreement,  devote any time to or engage in any  self-employment  or
employment  activities . Notwithstanding the preceding sentence,  as long as the
foregoing does not interfere with  Physician's  provision of services under this
Agreement,  Physician may lecture,  teach and publish without  obtaining  KTPA's
consent, which shall not be unreasonably withheld.

               (iv) The Physician shall  immediately  notify KTPA of any and all
incidents, unfavorable occurrences, notices or claims made arising out of his or
her services  under this  Agreement  as soon as he or she becomes  aware of this
information and shall cooperate in any  investigation  and in the defense of any
incidents, unfavorable occurrences, notices and claims.

               (v) The Physician agrees to be bound by and comply with the terms
and conditions of the MSA, applicable to Physician.

     5.     Duty to Account.

          (a)  Except as  otherwise  permitted  by the terms of this  Agreement,
Physician  shall  assign,  account,  and pay to KTPA  all  accounts  receivable,
compensation  and any other form of remuneration  due from or paid by any source
other than KTPA attributable to (i) services he or she has rendered on behalf of
KTPA under this Agreement;  (ii) services he or she has rendered during the Term
in violation of the terms of this  Agreement  including  without  limitation,  a
violation  of  Sections  4 and 8; or  (iii)  sums  which  come  into  his or her
possession  which are  attributable  to the services of other employees of KTPA,
including, but not limited to, fees for medical services,  teaching,  lecturing,
consulting,   research,  court  testimony  and  publication  of  articles  of  a
professional   nature  (the   accounts   receivable,   compensation   and  other
remuneration  attributable  to  services  described  in (i),  (ii) and (iii) are
collectively  the "KTPA  Receivables").  Physician  appoints  KTPA as his or her
attorney in fact to execute,  deliver and/or endorse  checks,  applications  for
payments, insurance claim forms or other instruments or documents, convenient or
required  in the  exclusive  discretion  of KTPA to fully  collect,  secure  and
realize  all KTPA  Receivables  and  other  sums due with  respect  to  services
provided  under this  Agreement.  This  power of  attorney  is  coupled  with an
interest, is irrevocable and shall survive the expiration or termination of this
Agreement for a time period without  limitation for all services rendered during
the Term.  Disability  insurance  benefits  and medical  expense  reimbursements
received  by  Physician  pursuant  to any  formal  plan  of  KTPA  shall  not be
considered a KTPA Receivable for purposes of this Section.


                                       7


          (b) All KTPA  Receivables  shall be the sole  property of KTPA.  In no
event shall  Physician  be entitled to any portion of KTPA  Receivables,  or the
proceeds from KTPA Receivables, during the Term or after the termination of this
Agreement, whether or not KTPA Receivables may have been derived in any way from
the performance of Physician pursuant to the terms of this Agreement.

     6.  Representations and Warranties of Physician.  The Physician  represents
and warrants to KTPA as follows:

          (a)     Physician is a physician duly licensed to practice medicine
under the laws of the State of Texas;
          (b) Physician has to the best of his knowledge complied with all laws,
rules and regulations  relating to the practice of medicine and is able to enter
into and perform all duties under this Agreement;

          (c) except for the Related  Documents,  Physician is not a party to or
bound by any other  agreement or  commitment,  or subject to any  restriction or
agreement   related  to   previous   employment   or   consultation   containing
confidentiality  or non-compete  covenants or other relevant  restrictions which
may have a possible present or future adverse affect on KTPA or the Physician in
the performance of his or her duties under this Agreement;

          (d) except as disclosed on Schedule 6(d), Physician has never: (i) had
his or her professional  license,  Drug Enforcement  Agency number,  Medicare or
Medicaid provider status or staff privileges at any hospital or medical facility
suspended,   relinquished,   terminated  or  revoked;   (ii)  been  reprimanded,
sanctioned or disciplined by any licensing board or any federal,  state or local
society or agency,  governmental body, hospital,  third party payor or specialty
board;  or, (iii) had a final judgment or settlement  without  judgment  entered
against him or her in connection with a malpractice or similar action;

          (e) to the best of his or her knowledge, Physician is in good physical
and mental health and does not suffer from any illness or disability which could
prevent  him or her  from  fulfilling  his or her  responsibilities  under  this
Agreement; and

          (f) none of the  representations  or  warranties  made by Physician in
this  Agreement  or in any resumes or curricula  vitae  submitted to KTPA or any
Affiliate of KTPA,  or in any  insurance  applications  or any staff  membership
applications  submitted to any third party in  connection  with this  Agreement,
contains or will contain any untrue  statement of a material  fact,  or omits or
will omit to state a material fact  necessary in order to make the statements or
provisions in this Agreement not misleading or incomplete.

          During the Term, the Physician  agrees to  immediately  notify KTPA of
any fact or circumstance which occurs or is discovered during the Term, which in

                                       8


itself or with the passage of time and/or the combination  with other reasonably
anticipated factors does render or will render any of these  representations and
warranties to be untrue.

     7.     Confidentiality.

          (a) Confidential  Information.  The Physician  acknowledges  that as a
result of the  Physician's  employment  with KTPA,  the  Physician  has and will
necessarily  become  informed  of, and have  access  to,  certain  valuable  and
confidential information of KTPA, including,  without limitation, trade secrets,
technical information,  plans, lists of patients,  data, records, fee schedules,
computer programs, manuals, processes, methods, scheduling, financial data, file
schedules,  intangible  rights,  contracts,   agreements,   licenses,  personnel
information  and the  identity  of  health  care  providers  (collectively,  the
"Confidential Information"),  and that the Confidential Information, even though
it may be  contributed,  developed  or  acquired  in  whole  or in  part  by the
Physician, is KTPA's exclusive property to be held by the Physician in trust and
solely for KTPA's  benefit.  Accordingly,  except as  required by law or for the
performance of Physician's duties under this Agreement, the Physician shall not,
at any time,  either  during or  subsequent to the Term,  use,  reveal,  report,
publish,  copy,  transcribe,  transfer  or  otherwise  disclose  to any  person,
corporation or other entity,  any of the  Confidential  Information  without the
prior written consent of KTPA  exercisable in its sole and absolute  discretion,
except to  officers  and  employees  of KTPA and  except for  information  which
legally  and  legitimately  is or  becomes  of  general  public  knowledge  from
authorized sources other than the Physician.

          (b)  Return  of  Confidential  Information.  Upon the  termination  of
Physician's  employment  under this  Agreement,  the  Physician  shall  promptly
deliver to KTPA all KTPA property and possessions including, without limitation,
all drawings,  manuals, letters, notes, notebooks,  reports, copies, deliverable
Confidential  Information  and all other  materials  relating to KTPA's business
which are in the Physician's possession or control.

     8.  Non-Competition and Nonsolicitation.  Physician  acknowledges that as a
result of Physician's  employment  with KTPA,  Physician will become informed of
and  have  access  to the  Confidential  Information,  the  unauthorized  use or
disclosure of which would cause irreparable injury to KTPA. In consideration for
access to the Confidential  Information,  the substantial  compensation  paid to
Physician  by KTPA,  and the other  benefits  received by  Physician  hereunder,
Physician agrees with KTPA as follows:

          (a)  Definitions.  As used in this Section 8, the following terms have
the specified meanings:

               (i)  "Competing   Business"  means  any  business  that  provides
management  services  that are the same as or similar to those  provided  by the
Management Company during the Initial Term and any Renewal Term.


                                       9


               (ii)   "Contracting   Parties"  means  any  and  all  facilities,
including but not limited to hospitals,  clinics,  PHOs, PPOs, HMOs,  integrated
delivery  systems,   ambulatory  centers,   third  party  payors,  managed  care
companies,  and other parties or  facilities  that have  contracted  with or are
serviced by KTPA or any of its Affiliates.

               (iii)  "Management  Company"  means  Sheridan  Healthcorp,  Inc.,
Sheridan Healthcare, Inc., and their respective Affiliates.

               (iv)  "Restricted  Area" means the area within  twenty-five  (25)
miles of any location  where  Physician  provided  medical  services  during the
twenty  four  (24)  months  immediately  prior  to the  date of  termination  of
Physician's employment with KTPA.

          (b)  Noncompetition  During  Employment.  Physician agrees that during
Physician's employment with KTPA or any of its Affiliates,  Physician shall not,
either  directly or  indirectly,  on  Physician's  own behalf or as an employee,
employer,  consultant,   contractor,  agent,  principal,  partner,  stockholder,
corporate  officer,  director,  or in any  other  individual  or  representative
capacity,  (i) provide medical services to or for any person or entity except in
Physician's  capacity as an employee of KTPA or an  Affiliate  of KTPA,  or (ii)
engage in a Competing Business.

          (c)  Noncompetition  After  Employment.  Physician  agrees  that for a
period of two (2) years commencing on the date of the termination of Physician's
employment  with  KTPA  (whether  by  resignation,   discharge,  or  otherwise),
Physician shall not, either directly or indirectly, on Physician's own behalf or
as an employee, employer,  consultant,  contractor,  agent, principal,  partner,
stockholder,  corporate  officer,  director,  or  in  any  other  individual  or
representative  capacity,  (i) provide  medical  services  within the Restricted
Area, or (ii) engage in a Competing Business within the State of Texas.

          (d) Termination of Medical Staff  Privileges.  Physician  acknowledges
that  Privileges at the hospital or any other health care facilities to which he
or she is assigned are predicated and contingent  upon  Physician's  contractual
relationship with the KTPA. If Physician's employment relationship with the KTPA
is  terminated  for any reason  whatsoever,  the  Privileges of Physician at the
hospital or any other health care facilities to which he or she is assigned will
terminate  automatically  and  Physician  shall  immediately  resign  from,  and
surrender, all Privileges at the hospital or any other health care facilities to
which he or she is  assigned  and  Physician  expressly  waives any right to any
challenge  or  review  (under  any  fair  hearing  plan  or  otherwise)  of  the
termination  of his or her  Privileges  at the  hospital or at those health care
facilities and all claims of any kind whatsoever,  including due process claims,

                                       10


he or she or  his  or  her  estate  may  have  against  the  KTPA  or any of its
Affiliates  and all other parties with respect to the  termination of his or her
Privileges;  provided,  however, that if concurrent with the termination of such
membership or privileges  under this Section,  a hospital or medical staff takes
action that is based on the quality of services rendered by Physician or that is
reportable  to the  Texas  State  Board of  Medical  Examiners  or the  National
Practitioner  Data Bank,  then nothing in this Section shall affect or limit any
applicable  hearing  rights  Physician  may have  regarding  such  action by the
hospital or medical  staff under the then  current  medical  staff bylaws at the
hospital  or  health  care  facility.  The  terms of this  Agreement  will  take
precedence over any  inconsistent  terms which may be found in the bylaws of the
medical  staff or of the hospital or any other health care  facilities  to which
Physician is assigned, or in the KTPA's contract with any employees. Termination
or resignation by Physician  shall not, in and of itself,  constitute a negative
action  reportable  as staff  membership  revocation in future  applications  by
Physician. Physician agrees that for a period of two (2) years commencing on the
date of termination of Physician's employment with the KTPA, Physician shall not
apply for or obtain Privileges at the hospital or any other health care facility
to which he or she was assigned  during the twenty four (24) months  immediately
prior to the date of termination of Physician's employment with the KTPA.

          (e)  Nonsolicitation  and Related  Activities.  Physician  agrees that
during  Physician's  employment  with  KTPA  and for a period  of two (2)  years
commencing on the date of the  termination of Physician's  employment  with KTPA
(whether by resignation,  discharge, or otherwise),  Physician shall not, either
directly or indirectly:

               (i) induce or solicit,  or attempt to induce or  solicit,  any of
KTPA's patients to terminate,  curtail or restrict their  relationship with KTPA
or any of its Affiliates;

               (ii) induce or solicit,  or attempt to induce or solicit,  any of
KTPA's Contracting Parties to terminate,  curtail or restrict their relationship
with KTPA or any of its Affiliates;

               (iii)  induce or solicit,  or attempt to induce or  solicit,  any
person  employed  or  contracted  by  KTPA  or any of its  Affiliates  to  leave
Physician's  employment or not fulfill Physician's  contractual  responsibility,
whether or not the employment or contracting is full-time or temporary, pursuant
to a written or oral agreement,  or for a determined  period of time or at will;
or

               (iv) assist others in taking any action  described in clauses (i)
through (iii) above.

          (f)  Reasonableness of Restrictions.  Physician  acknowledges that the
time,  geographical scope, and scope of activity  restrictions set forth in this
Agreement are  reasonable  in scope and are necessary for the  protection of the
business and goodwill of KTPA. Physician expressly  acknowledges and agrees that
Physician's  experience and abilities are such that Physician's  compliance with
the  covenants  and  restrictive  covenants  contained  herein  will  not  cause
Physician any undue hardship or unreasonably  interfere with Physician's ability
to earn a livelihood.  Physician agrees that should any portion of the covenants
in this Section 8 be  unenforceable  because of the scope  thereof or the period
covered  thereby or otherwise,  the covenants  shall be deemed to be reduced and
limited to enable them to be enforced to the extent  permissible  under the laws
and public policies applied in the jurisdiction in which enforcement is sought.

                                       11


          (g) Independent Agreement. All of the covenants and provisions of this
Section  8 on the part of the  Physician  shall  be  construed  as an  agreement
independent  of any other  agreement  between  KTPA and the  Physician,  and the
existence of any claim or cause of action of the Physician against KTPA, whether
predicated  on any such other  agreement or  otherwise,  shall not  constitute a
defense to the  enforcement  by KTPA of the  covenants  and  provisions  of this
Section 8; provided that  notwithstanding  anything contained in this Agreement,
in the  event  that  this  Agreement  is  properly  terminated  for cause by the
Physician  pursuant to Section 10(c), then Sections 8(c) and (d) shall not apply
and clause (iii) of Section 8(e) shall not apply except to the extent it applies
to clauses (i), (ii) and (iv) of Section 8(e).


          Notwithstanding  anything  contained in this  Agreement,  in the event
that  KTPA  materially  breaches  or  materially  fails  to  meet  any  material
obligation  under this  Agreement  (after KTPA has received at least thirty (30)
days written  notice of that material  breach  pursuant to Section 11(f) of this
Agreement  and KTPA has failed to remedy that breach  within the thirty (30) day
period),  then  Sections  8(b),  (c) and (d) (except to the extent it applies to
Sections 8(a), (e), (f) and (g)) shall not apply.

     9. Remedies. The Physician and KTPA each acknowledge that: (i) the services
Physician  will render under this Agreement are special and unique and cannot be
replaced by KTPA;  (ii) the event of a breach by the Physician of the provisions
of Sections 4(c), 5, 7, 8, 10(d) or 11(a) will cause KTPA irreparable harm; and,
(iii) monetary  damages in an action at law would not provide an adequate remedy
in the event of a breach. Accordingly, the Physician agrees that, in addition to
any other remedies (legal,  equitable or otherwise)  available to KTPA, KTPA may
seek and obtain injunctive relief against the breach or threatened breach of the
provisions of Sections 4(c), 5, 7, 8, 10(d) or 11(a) as well as all other rights
and remedies available at law and equity. The existence of any claim or cause of
action of Physician  against KTPA or any of its Affiliates,  whether arising out
of  this  Agreement  or  otherwise,  shall  not  constitute  a  defense  to  the
enforcement  by  KTPA  or any of its  Affiliates  of  the  provisions  of  these
Sections.  Nothing contained in this Section 9 shall be construed as prohibiting
KTPA and all other injured  parties from pursuing all other  remedies  available
(if  available) to them for a breach or threatened  breach of the  provisions of
Sections 4(c), 5, 7, 8, 10(d) or 11(a),  including the recovery of  compensatory
and punitive damages from Physician.  Physician further  acknowledges and agrees
that the  covenants  contained  in  Sections  4(c),  5, 7, 8, 10(d) or 11(a) are
necessary for the  protection  of KTPA's  legitimate  business and  professional
duties,  ethical  obligations  and  interests,  and are  reasonable in scope and
content. These legitimate business interests include, without limitation,  trade
secrets (as defined under  applicable  Texas law);  other valuable  confidential
business information that may not qualify as trade secrets, but as to which KTPA
or any of its  Affiliates  has expended time and money in  developing  and as to
which any of them  holds  confidential  and  proprietary,  substantial  business
relationships  with existing and  prospective  customers,  clients and patients;
customer,  client and patient goodwill  associated with its ongoing business and
evidenced by the various trademarks,  trade names, service marks and trade dress
used by KTPA or any of its  Affiliates in connection  with its business,  and an
expectation  of continuing  patronage from its existing  customers,  clients and
patients;  and the  extraordinary  and  specialized  training  in  managed  care

                                       12


medicine  which will be provided by KTPA to  Physician  during the Term.  In the
event of any  breach or  violation  by  Physician  of any of the  provisions  of
Section 8, the  running of the  two-year  period  (but not KTPA's and any of the
Physician's  obligations  thereunder) shall be tolled during the continuation of
any breach or violation.

     10.     Termination.  Physician's employment under this Agreement may be
terminated prior to the expiration of the Term described in Section 2, upon
the occurrence of any of the following events:

          (a) Death. This Agreement will automatically  terminate upon the death
of the Physician.  KTPA shall have no further obligation under this Agreement to
make any payments to, or bestow any benefits on, the Physician's  beneficiary or
beneficiaries  from and after the date of the Physician's  death,  other than as
provided in Section 10(d).

          (b) Disability.  To the extent permitted by law, this Agreement may be
terminated at KTPA's option, exercisable in its absolute sole discretion, if the
Physician  shall  suffer  a  permanent  disability.  For  the  purposes  of this
Agreement,  the term "permanent  disability" means the Physician's  inability to
perform  his or her  material  duties  under this  Agreement,  with or without a
reasonable  accommodation,  for a period of any three (3) consecutive months due
to illness, accident or any other physical or mental incapacity. Physician shall
not be entitled to receive any compensation during any periods of absence caused
by a permanent or temporary  disability.  KTPA shall have no further  obligation
under this  Agreement  to make any  payments  to, or bestow any benefits on, the
Physician from and after the date of  termination  under this  provision,  other
than as provided in Section 10(d).

          (c)  Cause.  This  Agreement  may be  terminated  for  cause at KTPA's
option,  at any time upon  delivery of written  notice to the  Physician.  Cause
shall mean, for purposes of this Agreement, the Physician's: (i) material breach
of any material provision of this Agreement;  (ii) willful refusal to perform an
ethical (as defined by the AMA Code of Conduct) duty directed by KTPA's Board of
Directors or a  supervising  officer,  an  executive  of KTPA or any  authorized
delegatee, which is reasonably within the scope of the Physician's duties; (iii)
misappropriation  of  assets  or  business  opportunities  of KTPA or any of its
Affiliates  for personal or non-KTPA  use; (iv)  commission  of any  misdemeanor
involving moral turpitude and any felony; (v) commission of fraud, embezzlement,
or breach of trust;  (vi)  revocation or suspension  of  Physician's  license to
practice medicine under the laws of the State of Texas for a time period greater
than thirty  days;  (vii)  failure or inability to  competently  and  adequately
perform his or her duties under this Agreement, as determined by KTPA's Board of
Directors,  exercisable  in its sole  discretion;  (viii)  breach  of his or her
obligations contained in Section 11(a) of this Agreement; (ix) loss, suspension,
revocation or  substantial  curtailment  of  Physician's  appointment  to and/or
privileges  on the medical  staff at any health care  facility  where  Physician
provides  services  under  this  Agreement  (a  "Health  Care  Facility");   (x)
commission of a material act of professional misconduct; (xi) commission of acts
that in any way  materially  jeopardize  or damage the  professional  integrity,
reputation or relationships of KTPA or any of its Affiliates; (xii) this section
not used;  (xiii)  negligence,  misfeasance or  malfeasance  in connection  with
performing or discharging Physician's obligations under this Agreement; or (xiv)

                                       13


being a primary basis for KTPA's or an Affiliate's  inability to obtain adequate
professional  liability  coverage  in  accordance  with  Section  3(e)  of  this
Agreement.  Prior to  KTPA's  termination  of this  Agreement  for  cause  under
Sections  10(c)(i)  (except as provided  below),  10(c)(vi) or 10(c)(vii),  KTPA
shall first have provided Physician with at least thirty (30) days prior written
notice and Physician shall have not, within that thirty (30) days,  remedied the
basis of that termination to KTPA's  reasonable  satisfaction.  No right of cure
shall exist for KTPA's  termination  of this  Agreement for cause under Sections
10(c)(ii), (iii), (iv), (v), (viii), (ix), (x), (xi), or (xiii).

               This  Agreement  may be terminated  for cause at the  Physician's
option,  for KTPA's  failure to  substantially  perform its  obligations  to the
Physician under this Agreement after KTPA has received at least thirty (30) days
prior written notice of that substantial failure and KTPA has failed within that
thirty  (30) day period to remedy  the  substantial  failure to the  Physician's
reasonable satisfaction.

               Neither KTPA nor its Affiliates shall have any further obligation
under this  Agreement  to make any  payments  to, or bestow any benefits on, the
Physician  from and after the date of  termination  of the Agreement  under this
provision, other than as provided in Section 10(d).

          (d) Obligations.  In the event of a termination  under Sections 10(a),
(b) or (c), KTPA shall have no further  obligation  under this Agreement to make
any payments to, or bestow any  benefits  on, the  Physician  from and after the
date of termination, other than payments or benefits accrued and due and payable
to Physician prior to the date of the termination.  Physician shall, upon KTPA's
request and promptly upon notice, vacate all premises,  including all facilities
serviced by KTPA.  Physician  shall  return all of the  property of KTPA and its
Affiliates that is in his or her possession or control.

          (e) Medical Staff Privileges.  Physician  acknowledges and agrees that
Physician's  employment is expressly  contingent  upon  Physician  being granted
appropriate  continuous  clinical privileges to provide services at the hospital
or any other health care facilities to which he or she is assigned. If Physician
is unable to receive or maintain those clinical privileges  necessary to perform
all material services of Physician under this Agreement at the hospital or other
health  care  facilities  for  any  reason  whatsoever,  whether  or  not  those
privileges  are  granted  to  other   employees  or  contractors  of  the  KTPA,
Physician's employment under this Agreement shall be terminated.

     11.     Miscellaneous.

          (a) Substance  Abuse Policy.  It is KTPA's policy (the  "Policy") that
none of its employees  shall use or abuse any controlled  substances at any time
or be under the influence of alcohol or be affected by the use of alcohol during
the time  period  required to perform  their  duties and  obligations  under any
employment  agreements.  Physician  agrees to abide by the Policy  described  in
Schedule A to this Agreement.


                                       14


          (b) Survival.  The  provisions of Sections 4(c), 6, 7, 8, 9, 10(d) and
11 shall survive the  expiration  or  termination  of this  Agreement for a time
period without limitation.

          (c) Entire  Agreement;  Waiver.  This  Agreement  contains  the entire
understanding   of  the  parties  and  merges  and   supersedes   any  prior  or
contemporaneous  agreements  between  the parties  relating to this  Agreement's
subject matter.  This Agreement may not be modified or terminated orally, and no
modification,  termination or attempted waiver of any of the provisions shall be
binding  unless in writing and signed by the party  against whom it is sought to
be enforced; provided however, that Physician's compensation may be increased at
any  time by KTPA  without  in any way  affecting  any of the  other  terms  and
conditions of this  Agreement,  which in all other respects shall remain in full
force and effect. Failure of a party to enforce one or more of the provisions of
this Agreement or to require at any time  performance of any of the  obligations
under this Agreement  shall not be construed to be a waiver of any provisions by
a party nor to in any way affect the  validity  of this  Agreement  or a party's
right to enforce any provision of this  Agreement,  nor to preclude a party from
taking any other action at any time which it would legally be entitled to take.
          (d) Mergers and Consolidation; Successors and Assigns. Physician shall
not have the right to assign or delegate this personal service Agreement, or any
of his or her rights or obligations under this Agreement, without KTPA's consent
exercisable in its sole discretion.  The preceding sentence shall not hinder the
Physician's  estate  from being  entitled  to  receive  all  accrued  and unpaid
compensation and benefits due to Physician at the time of his or her death. KTPA
may  freely  assign  and  delegate  all of its  rights  and  duties  under  this
Agreement.  Additionally,  the  parties  each agree that upon the sale of all or
substantially  all of the  assets,  business  and  goodwill  of  KTPA  or all or
substantially  all of the stock of KTPA to another  company or any other entity,
or upon the merger or  consolidation  of KTPA with another  company or any other
entity,  this Agreement shall inure to the benefit of, and be binding upon, both
Physician and KTPA and any entity purchasing the assets,  business,  goodwill or
stock, or surviving merger or consolidation.

          (e)  Additional  Acts.  The Physician and KTPA each agrees to execute,
acknowledge and deliver all further instruments,  agreements or documents and do
all further acts that are  necessary or expedient to carry out this  Agreement's
intended  purposes.  Each  party  recognizes  that time is of the  essence  with
respect to each of their obligations in this Agreement. Each party agrees to act
as soon as practicable in light of the  particular  circumstances  and use their
best  efforts  in as timely a fashion  as  possible  to  maximize  the  intended
benefits of this Agreement.

          (f)  Notices.  Whenever  any notice,  demand or request is required or
permitted under this Agreement,  that notice,  demand or request shall be either
hand-delivered in person or sent by United States Mail, registered or certified,
postage prepaid, or delivered via overnight courier to the addresses below or to
any other  address  that either  party may specify by notice to the other party.
Neither party shall be obligated to send more than one notice to the other party
and no notice of a change of address  shall be effective  until  received by the
other party. A notice shall be deemed received upon hand delivery,  two business
days after posting in United  States Mail or one business day after  dispatch by
overnight courier.


                                       15


          To KTPA:Kenneth        J. Trimmer, M.D., P.A.
                                 4651 Sheridan Street, Suite 400
                                 Hollywood, Florida 33021
                                 ATTN:  Jay A. Martus, Esq., General Counsel

          To the Physician:      Kenneth J. Trimmer, M.D.
                                 6628 Castle Pines Drive
                                 Plano, Texas 75093

          With a copy to:        Jenkens & Gilchrist, a Professional Corporation
                                 1445 Ross Avenue, Suite 3200
                                 Dallas, Texas  75202
                           Attn: Kenneth Gordon, Esq.

          (g) Headings.  The headings of the  paragraphs of this  Agreement have
been inserted for  convenience of reference only and shall in no way restrict or
otherwise  affect the construction of the terms or provisions of this Agreement.
References in this Agreement to Sections are to the sections of this Agreement.

          (h) Construction.  This Agreement shall be construed without regard to
any presumption or other rule requiring  construction  against the party causing
this Agreement to be drafted, including any presumption of superior knowledge or
responsibility  based upon a party's  business or profession or any professional
training,  experience,  education  or degrees of any member,  agent,  officer or
employee of any party.  If any words in this Agreement have been stricken out or
otherwise eliminated (whether or not any other words or phrases have been added)
and the  stricken  words  initialed  by the  party  against  whom the  words are
construed,  this Agreement shall be construed as if the words so stricken out or
otherwise eliminated were never included in this Agreement and no implication or
inference  shall be drawn from the fact that those  words were  stricken  out or
otherwise eliminated.

          (i)   Counterparts.   This  Agreement  may  be  executed  in  multiple
counterparts,  each of which shall be deemed to be an original  and all of which
together shall be deemed to be one and the same instrument.

          (j)  Severability.  The invalidity or  unenforceability  of any one or
more of the words,  phrases,  sentences,  clauses, or sections contained in this
Agreement  shall not affect the  validity  or  enforceability  of the  remaining
provisions  of this  Agreement  or any part of any  provision,  all of which are
inserted  conditionally  on their being valid in law,  and in the event that any
one or more of the words, phrases,  sentences,  clauses or sections contained in


                                       16


this Agreement shall be declared invalid or unenforceable,  this Agreement shall
be  construed  as if such  invalid  or  unenforceable  word or words,  phrase or
phrases,  sentence or sentences,  clause or clauses,  or section or sections had
not been inserted or shall be enforced as nearly as possible  according to their
original  terms and intent to eliminate any invalidity or  unenforceability.  If
any invalidity or unenforceability is caused by the length of any period of time
or the size of any area set forth in any part of this  Agreement,  the period of
time or area,  or both,  shall be  considered  to be reduced to a period or area
which would cure the invalidity or unenforceability.

          (k) Governing  Law.  This  Agreement is made and executed and shall be
governed  by and  construed  in  accordance  with the laws of the State of Texas
applicable to contracts  wholly  negotiated,  executed and  performable  in that
state, without regard to its conflicts of laws principles.

          (l) No Third Party  Beneficiaries.  All obligations of KTPA under this
Agreement are imposed solely and exclusively  for the benefit of Physician,  and
no other person will have standing to enforce, be entitled to or be deemed to be
the beneficiary of any of these obligations.

          (m) Litigation;  Prevailing  Party. In the event of any arbitration or
litigation,  including  appeals,  with regard to this Agreement,  the prevailing
party,  as defined by the trier of fact,  shall be entitled to recover  from the
non-prevailing  party all reasonable  fees,  costs,  and expenses of counsel (at
pre-trial, trial and appellate levels).

          (n) Definition of Affiliates.  The term  "Affiliates"  for purposes of
this Agreement  means an individual or entity (whether now existing or hereafter
created)  that  directly,  or  indirectly  through  one or more  intermediaries,
controls,  is controlled by, or is under common control with,  another person or
entity, and includes: (1) a spouse, parent, brother, sister, child, aunt, uncle,
grandparent,  niece,  nephew,  first cousin of an individual or an  individual's
spouse (a "Relative"); (2) an officer, director, trustee, employee,  shareholder
or partner of a person which is not a Relative of any such person;  (3) a spouse
of any Relative;  and (4) any individual or entity controlled by, controlling or
under  common  control  with any  individual  or entity  designated  above.  For
purposes of the foregoing,  "control" means the possession,  direct or indirect,
of the power to direct or cause the direction of the  management and policies of
an entity or individual,  whether through the ownership of voting securities, by
contract, or otherwise.

          (o)  Arbitration;  Jury  Trial.  THE  PARTIES  SHALL  USE  GOOD  FAITH
NEGOTIATION TO RESOLVE ANY CONTROVERSY,  DISPUTE OR DISAGREEMENT ARISING OUT OF,
RELATING  TO OR IN  CONNECTION  WITH  THIS  AGREEMENT  OR  THE  BREACH  OF  THIS
AGREEMENT.  IN THE EVENT THE  PARTIES  ARE  UNABLE TO  RESOLVE  ANY  DISPUTE  OR
CONTROVERSY  BY  NEGOTIATION,  EITHER  PARTY MAY SUBMIT SUCH  DISPUTE TO BINDING
ARBITRATION WHICH SHALL BE CONDUCTED IN DALLAS,  TEXAS. THE BINDING  ARBITRATION
SHALL BE CONDUCTED IN ACCORDANCE  WITH THE RULES OF PROCEDURE FOR ARBITRATION OF
THE NATIONAL HEALTH LAWYERS ASSOCIATION  ALTERNATIVE DISPUTE RESOLUTION SERVICE.
JUDGMENT ON THE AWARD OR DECISION  RENDERED BY THE  ARBITRATOR MAY BE ENTERED IN
ANY COURT HAVING JURISDICTION. NOTWITHSTANDING THE TERMS OF THIS SECTION, IN THE
EVENT  OF ANY  BREACH  OR  DISPUTE  OF  THIS  AGREEMENT  OR  ANY OF THE  RELATED
AGREEMENTS FOR WHICH AN EQUITABLE  REMEDY IS APPROPRIATE THE AGGRIEVED PARTY MAY

                                       17


SEEK AND OBTAIN RELIEF IN A COURT OF COMPETENT  JURISDICTION  TO AVAIL ITSELF OF
THE  EQUITABLE  REMEDIES.  IN THAT CASE SHOULD ANY PENDENT  LEGAL CLAIMS  ARISE,
THOSE CLAIMS SHALL BE  SUBMITTED  TO BINDING  ARBITRATION,  HOWEVER IF THE COURT
FAILS TO REMAND THOSE LEGAL CLAIMS TO ARBITRATION,  THEN FOR THOSE LEGAL CLAIMS,
THE PARTIES WAIVE ALL RIGHTS TO ANY TRIAL BY JURY IN ALL LITIGATION  RELATING TO
OR ARISING OUT OF THIS AGREEMENT.

     Each of the parties have duly executed  this  Agreement as of the Execution
Date.


                                   KTPA:

                                   KENNETH TRIMMER, M.D., P.A.,
                                   a Texas professional association



Date:                              By:
     --------------------              -----------------------------------------
                                       Kenneth J. Trimmer, M.D.
                                       President


                                   PHYSICIAN:

                                   KENNETH J. TRIMMER, M.D.



Date:
     --------------------          ---------------------------------------------
                                   Kenneth J.Trimmer, M.D.




                                       18



Schedule A

SUBSTANCE ABUSE POLICY OF

KENNETH J. TRIMMER, M.D., P.A.


     Purpose and Scope: Kenneth Trimmer, M.D., P.A. ( "KTPA"), disapproves of
the use of any illegal substances and the abuse of legal drugs or alcohol by
its employees or independent contractors.

     KTPA has a vital  interest in  maintaining  safe,  healthful  and efficient
working  conditions for its employees and independent  contractors.  Being under
the influence of a drug or alcohol on the job may pose serious safety and health
risks not only to the user but to all  those  who work  with the user.  The use,
possession,  sale or  distribution  of drugs or  alcohol  in the Work  Place (as
defined  below),  while on KTPA business,  or while using KTPA property may also
pose unacceptable risks for safe, healthful and efficient operations.

     KTPA  recognizes  that its own health and  future  are  dependent  upon the
physical and psychological health of its employees and independent  contractors.
Accordingly,  it is the right and intent of KTPA to  maintain a safe,  healthful
and efficient  working  environment  for all of its  employees  and  independent
contractors and to protect KTPA property, equipment and operations.

     With these basic  objectives in mind, KTPA has established this policy (the
"Substance  Abuse  Policy")  with  regard  to  the  use,  possession,   sale  or
distribution of drugs,  inhalants and alcohol. This policy is intended to comply
with the  requirements  for a substance  abuse policy  under the Texas  Workers'
Compensation   Act  and  related  rules   promulgated   by  the  Texas  Workers'
Compensation Commission.

     Prohibition  of  Substance  Abuse:   KTPA  expressly   prohibits  the  use,
possession,  sale  or  distribution  of  drugs,  inhalants,  or  alcohol  by its
employees or independent  contractors  (each an  "Individual") in the Work Place
(as defined below) or while performing KTPA business,  including but not limited
to, the following:

     A.       Alcohol:  The use or being under the  influence  of alcohol  while
              in the Work Place or while performing KTPA business is prohibited.

     B.       Illegal Drugs: The use, being under the influence, possession,
              sale, purchase, distribution  or   transfer  of an  illegal   drug
              while in the Work Place or while performing KTPA business is
              prohibited. The presence in any detectable amount of any   illegal
              drug in an Individual while in the Work Place or while  performing
              KTPA business is prohibited.

     C.       Legal Drugs (Prescription  Drugs): The use or being   under    the
              influence of any legally   obtained  drug    while performing KTPA
              business or while in the Work Place is  prohibited  to  the extent
              such use or influence may affect (i) the safety of the Individual,
              other employees   or independent  contractors,  or  members of the
              public,  or  (ii)  the  safe,   efficient  operation  of    KTPA's
              facilities  and equipment.

     KTPA  also  prohibits  the use or  being  under  the  influence  of  drugs,
inhalants or alcohol by an Individual  during  non-work hours while using a KTPA
vehicle or KTPA equipment since KTPA believes that such use could jeopardize the
safety of the Individual, other employees or independent contractors, members of
the public, and KTPA equipment.

     KTPA  further  prohibits  the storage by an  Individual  of illegal  drugs,
inhalants or alcohol at the Work Place, whether in lockers,  desks,  vehicles or
any other depository or in the Individual's  personal effects (including without
limitation purses, briefcases and vehicles).

                                       


     Definition of Work Place:  For the purposes of this Substance Abuse Policy,
the term  "Work  Place"  refers to (i) all of  KTPA's  premises  and  facilities
(including   without   limitation   offices,   warehouses,   parking  lots,  and
recreational  or rest areas),  (ii) all of the work sites at which KTPA business
is  performed,  whether or not KTPA owns,  leases or has control  over such work
sites,   (iii)  all  facilities  at  which  KTPA's   employees  and  independent
contractors  provide  medical  services on behalf of KTPA, (iv) all locations at
which KTPA's employees are attending meetings concerning KTPA business,  and (v)
all automobiles,  trucks,  and other vehicles and equipment being used by KTPA's
employees and  independent  contractors  while on KTPA business,  whether or not
owned, leased or under the control of KTPA.

     Testing:   An  Individual  may  be  requested  to  undergo  a  blood  test,
urinalysis,  "breath  analyzer"  test, or other  diagnostic test (each a "Test")
under any of the following circumstances:

     1.     Prior to commencement of employment or engagement;

     2.     After the occurrence of any work-related  accident whether or not at
            the Work Place;

     3.     When management of KTPA has reasonable suspicion that drugs, 
            inhalants or alcohol are affecting job  performance  and/or  conduct
            of an Individual in the Work Place;

     4.     Before returning to work following a leave of absence; or

     5.     As part of a random sampling of employees and independent
            contractors.

     An Individual's  refusal to submit  immediately upon request to such a Test
may result in disciplinary action up to and including  termination of employment
or engagement.

     The   results  of  any  Test  will  be   reported   to   management   level
representatives of KTPA on a need-to-know basis and will be kept confidential.

     Searches:  To monitor compliance with this policy,  KTPA reserves the right
to conduct searches or inspections of an Individual's person or personal effects
including, without limitation, purses, briefcases, and motor vehicles located on
property  of  KTPA,  as well as  work  areas  and  property  of KTPA  used by an
Individual,  including without limitation,  lockers, desks, and offices, whether
secured,  unsecured,  or  secured  by lock or locking  device.  An  Individual's
refusal to submit to a search on request may result in disciplinary action up to
and including termination.

     Consequences  For Violation:  An  Individual's  violation of this Substance
Abuse Policy can result in disciplinary action, up to and including  termination
of  employment,  even for a first  offense.  The  decision to take  disciplinary
action is solely in the discretion of KTPA.

     Available Treatment Programs: KTPA does not provide any treatment programs,
drug and  alcohol  abuse  rehabilitation  programs,  or drug and  alcohol  abuse
education  programs.  KTPA does provide  health care  benefits for its full-time
employees   which  may  cover  some  drug  and/or  alcohol  abuse  treatment  or
rehabilitation.  For  further  information  about  the  availability  of and the
requirements for  participation in the programs,  if any, covered by such health
care insurance, please contact KTPA's current health care insurance carrier.



 
                              SUBSTANCE ABUSE POLICY
                           ACKNOWLEDGMENT AND CONSENT


     By my signature below, I acknowledge as follows:

     1.   I have received a copy of the attached Substance Abuse Policy of MCPA.

     2.   I have read and fully understand the attached Substance Abuse Policy.

     3.   I understand that if I violate the attached  Substance Abuse Policy it
          can   result in  disciplinary  action  against me, up to and including
          termination of employment or engagement, even for a first offense.

     4.   I understand  that, in order to provide  a safe  and  healthy  working
          environment,  it is the policy of MCPA to conduct drug screening tests
          and other investigative exams.

     5.   I understand that I am not compelled to consent to any search or test,
          but that if I do not  consent,  I will not be  allowed  to enter or to
          remain on MCPA's  premises  and I  will  be  subject  to  disciplinary
          action,  including termination of employment.

     6.   I understand and consent  to  disclosure  of the  results  of any drug
          screening test or investigative  examination to management level
          representatives of MCPA on a need-to-know basis.

     7.   With full knowledge of MCPA's Substance Abuse Policy, I hereby consent
          to the search and  testing  by MCPA or  its  agents for the purpose of
          enforcing  the attached Substance Abuse Policy.

     8.   I understand that compliance with the attached  Substance Abuse Policy
          is a condition of  employment.  I  understand  that failure or refusal
          to cooperate fully, sign any required   document,  or  submit  to  any
          inspection or test will be grounds for termination of employment.

     9.   I agree to abide by the attached Substance Abuse Policy.


WITNESS:                                EMPLOYEE:

                                        KENNETH J. TRIMMER, M.D.



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Witness Signature                       Kenneth J. Trimmer, M.D.



                                Date:
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Printed Name of Witness


Date
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