SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 --------------

                                    FORM 8-K

                                 CURRENT REPORT
                     PURSUANT TO SECTION 13 OR 15(d) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

       Date of Report (Date of earliest event reported): MAY 18, 2001


                      AMERICAN MEDICAL SECURITY GROUP, INC.
             (Exact name of Registrant as specified in its charter)


         WISCONSIN                 1-13154                      39-1431799
(State of Incorporation)      (Commission File Number)       (I.R.S. Employer
                                                            Identification No.)

3100 AMS BOULEVARD, GREEN BAY, WISCONSIN                                54313
         (Address of principal executive offices)                     (Zip Code)

                                 (920) 661-1111
              (Registrant's telephone number, including area code)


                                 --------------







ITEM 9.  REGULATION FD DISCLOSURE

     American  Medical  Security  Group,  Inc. (the  "Company") has developed an
investor  financial  presentation  that  will  be  available  on its  website  -
www.AMSchoices.com,  and  presented  to a  number  of  financial  analysts.  The
presentation is an update to a presentation  previously  furnished pursuant to a
Form 8-K dated February 21, 2001. The  presentation  (i)describes  the Company's
current  businesses,   strategies  and  financial  highlights;   (ii)  describes
projected changes in the mix of revenue  contributions  from the Company's major
businesses  anticipated by 2003; and (iii) provides new forward  looking revenue
projections  through 2003. The content of the presentation will form the base of
future presentations the Company expects to make at financial forums,  including
health  care  conferences  sponsored  by  various  financial  institutions.  The
presentation is prepared in summary fashion and contains information that should
be read in conjunction with the Company's  reports filed with the Securities and
Exchange Commission from time to time.

     Following is the content of the presentation.

                                    AMERICAN
                                MEDICAL SECURITY
                               RX for Good Health

                                    MAY 2001


    AMERICAN                                                CAUTIONARY STATEMENT
MEDICAL SECURITY
- -----------------
Rx for Good Health

This presentation is a summary of previously disclosed historical financial data
as of March 31,  2001,  unless  otherwise  indicated,  and  expectations  of the
Company held as of May 18, 2001. The Company  undertakes no obligation to update
this  information  as a  result  of  new  information  or  future  events.  This
presentation contains certain  "forward-looking"  statements (within the meaning
of the safe harbor provisions of the Private Securities Litigation Reform Act of
1995) with respect to strategic business plans, earnings and changes in business
mix. Such  statements are subject to inherent risks and  uncertainties  that may
cause actual results to differ materially from those contemplated.  See the last
page of this presentation for risk factors that may affect actual results.

Information  in  this  presentation  related  to the  Company's  major  business
products is provided in addition to previously  disclosed  information.  In this
presentation,  historical  and forward  looking data  reflecting  the  Company's
health  and life  insurance  segment  businesses  have been  allocated  to major
business products based on the underlying customer base.

                                                                               2



     AMERICAN                                               FINANCIAL HIGHLIGHTS
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Investment Considerations

        - Growing MedOne business

        - Leader in small group market

        - Profitable dental business

        - Strong systems and back office

        - High book value
                - Book value of $15.54 per share on 3/31/2001
                - Tangible book value of $7.97 per share on 3/31/2001

        - Effective action plans in place

        - Low debt to total capital ratio - 15.8%
                                                                               3


     AMERICAN                                                       AMS OVERVIEW
MEDICAL SECURITY
- -----------------
Rx for Good Health


[Map of the United States]                          - Specializes in providing
 Current markets served:                              healthcare benefit plans
                                                      for small-employer groups,
Alabama           Arizona            Arkansas         individuals & families
Colorado          Delaware           Florida
Georgia           Illinois           Indiana        - PPO model
Iowa              Kansas             Louisiana
Maryland          Michigan           Mississippi    - 2000 Revenues:
Missouri          Nebraska           Nevada             $989.9 million
New Mexico        North Carolina     North Dakota
Ohio              Oklahoma           Pennsylvania   - 1Q 2001 Revenues:
South Carolina    South Dakota       Tennessee          $232.3 million
Texas             Utah               Virginia
West Virginia     Wisconsin          Washington DC  - 652,683 medical members
                                                        at 3/31/2001
                                                                               4



     AMERICAN                                                       AMS OVERVIEW
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Preferred Provider Organization (PPO) Model

        - Open access to health care providers

        - PPOs have gained market share over HMOs

        - Less litigation risk

        - Less potential impact from legislation

                                                                               5


     AMERICAN                                                       AMS OVERVIEW
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Average group size is 6 employees

- -- Dedicated to Independent Agent

- -- 24-hour, world-class customer service

- -- Efficient back office, low-cost G & A

                                                                               6



     AMERICAN                                                       AMS OVERVIEW
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Ongoing Action Plans

        - Ensure premium yields exceed claim cost trends

        - Rapidly expand MedOne product sales
                - Individuals & Families

        - Focus small group sales in core markets

        - Continue efforts to reduce drug claim costs

                                                                               7


     AMERICAN                                                       AMS OVERVIEW
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Ongoing Action Plans (continued)

        - Enhance claims cost management programs

        - Promote Affordable Series products
                - Greater member participation in medical care costs

        - Strengthen Specialty Business
                - Dental

        - Leverage Internet in all businesses

                                                                               8


     AMERICAN
MEDICAL SECURITY
- -----------------
Rx for Good Health

                                   BUSINESSES


                                                                               9


     AMERICAN                                                         BUSINESSES
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Health Business
        - MedOne Component
                - MedOne Medical, and Life and STD associated with MedOne
                  members

        - Small Group Component
                - Small Group Medical, and Dental, Life and STD associated
                  with group members

 -- Specialty Business
        - Self-Funded and Network Revenue and Dental, Life and STD not
          associated with group or MedOne members

 -- Corporate
        - Revenue and Expenses not associated with the other segments

                                                                              10


     AMERICAN                                                         BUSINESSES
MEDICAL SECURITY
- -----------------
Rx for Good Health


- --Revenue Contributions in 2000 (% of all AMS revenues)


         [Pie Chart]                        63% Small Group
                                            25% MedOne
                                             9% Specialty
                                             3% Corporate

                                                                              11


     AMERICAN
MEDICAL SECURITY
- -----------------
Rx for Good Health


                                     MedOne

                        MedOne Medical, and Life and STD
                         associated with MedOne members


                                                                              12


     AMERICAN                                                   MedOne Component
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Product for individuals and their families

        - No employer coverage

        - Self-employed

- -- Sold through Independent Agents

- -- Higher profit potential than small group

        - Plan features higher deductibles, copays, etc.

        - More flexibility in underwriting and pricing

        - Better risk selection

                                                                              13


     AMERICAN                                                   MedOne Component
MEDICAL SECURITY
- -----------------
Rx for Good Health

- -- Revenues

        - Up 24% in 2000 from 1999

        - Up 31% in 1Q 2001 over 1Q 2000

- -- Membership

        - 34% of total 2000 membership vs. 23% in 1999

        - 38% of total 1Q 2001 membership
                                                                              14


     AMERICAN                                                   MedOne Component
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Significantly increase revenues & profitability by:

        - Expanding number of local agents

        - Creating additional regional/national distribution relationships

        - Developing e-business efficiencies

        - Increasing number of e-agency relationships

                                                                              15


     AMERICAN                                                   MedOne Component
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Revenue Contribution Growth (% of all AMS revenues)

                                     MedOne

        [Pie Chart]                                     [Pie Chart]

        2000 (actual)                                   2003 (projected)

        25% MedOne                                      50% MedOne



                                                                              16


     AMERICAN
MEDICAL SECURITY
- -----------------
Rx for Good Health


                                   SMALL GROUP

                  Small Group Medical, and Dental, Life and STD
                          associated with group members

                                                                              17


     AMERICAN                                              SMALL GROUP COMPONENT
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Small-employer groups, ranging in size from 2 to 50 employees

- -- Average group size is 6 employees

- -- Distribution through 17,500 Independent Agents

                                                                              18


     AMERICAN                                              SMALL GROUP COMPONENT
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Increase Small Group profitability by:

        - Focusing on core markets

        - Enhancing underwriting

        - Developing new products
                - Higher deductibles, copays, etc.

        - Strengthening claims cost management

        - Providing agents with power of Internet
                -e AMS.com secured agent site

                                                                              19


     AMERICAN                                              SMALL GROUP COMPONENT
MEDICAL SECURITY
- -----------------
Rx for Good Health


- --Revenue Contribution Change (% of all AMS revenues)

                                   Small Group


        [Pie Chart]                                     [Pie Chart]

        2000 (actual)                                   2003 (projected)

        63% Small Group                                 41% Small Group



                                                                              20


     AMERICAN
MEDICAL SECURITY
- -----------------
Rx for Good Health


                               SPECIALTY BUSINESS

            Self-Funded and Network Revenue, and Dental, Life and STD
                   not associated with group or MedOne members

                                                                              21


     AMERICAN                                                 SPECIALTY BUSINESS
MEDICAL SECURITY
- -----------------
Rx for Good Health


- --Consists of:

        - Dental Business
                - 171,000 stand-alone dental members
                - 126,000 additional members bundles to group plans

        - Owned Provider Networks leased to third parties
                - 96,000 non-AMS members

        - Self-Funded Business

                                                                              22


     AMERICAN                                                 SPECIALTY BUSINESS
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Increase Profitability by:

        - Expanding dental business
                - Increase sales & marketing activity

        - Grow non-AMS provider network members

- -- Selectively develop self-funded business

                                                                              23


     AMERICAN                                                         BUSINESSES
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Revenue Contribution Changes (% of all AMS revenues)


        [Pie Chart]                                     [Pie Chart]

        2000 (actual)                                   2003 (projected)

          63% Small Group                                 41% Small Group
          25% MedOne                                      50% MedOne
           9% Specialty                                    8% Specialty
           3% Corporate                                    1% Corporate


                                                                              24


     AMERICAN
MEDICAL SECURITY
- -----------------
Rx for Good Health


                              FINANCIAL HIGHLIGHTS


                                                                              25


     AMERICAN                                                    REVENUE CHANGES
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Near-term revenue reductions

        - Disciplined pricing

        - Changing small group market focus

- -- Significant MedOne revenue growth

                                                                              26



     AMERICAN                                                    REVENUE CHANGES
MEDICAL SECURITY
- -----------------
Rx for Good Health

[line graph]



                        1998            1999           2000           2001*          2002*           2003*
                                                                                   
Revenues:
Small Group             633,948         750,057        620,409        518,042        503,536         512,096
MedOne                  187,369         206,223        252,767        319,497        446,657         617,281
Other                   139,552         141,100        116,689         85,066         95,700         117,710
                        ====================================================================================
Total Health            960,869       1,097,380        989,865        922,605      1,045,893       1,247,087


                                                                              27


     AMERICAN                        CONDENSED CONSOLIDATED STATEMENTS OF INCOME
MEDICAL SECURITY                                                   (IN MILLIONS)
- -----------------
Rx for Good Health



                                                        2000                                     2001
                                   Qtr1            Qtr2             Qtr3*            Qtr4              Qtr1*

                                                                                     
REVENUES:
Insurance premiums              $ 247.9         $ 240.5           $ 232.0          $ 230.7          $ 222.5
Investment and other income         9.8             9.8               9.7              9.4              9.8
                                ----------------------------------------------------------------------------
        Total revenues            257.7           250.3             241.7            240.1            232.3

EXPENSES:
Medical and other benefits        188.1           182.0             180.1            174.4            166.6
SG&A and other expenses            66.8            64.5              61.7             64.9             64.2
                                ----------------------------------------------------------------------------
        Total expenses            254.9           246.5             241.8            239.3            230.8
                                ----------------------------------------------------------------------------

Pre-tax income (loss)               2.8             3.8              (0.1)             0.8              1.5

After-tax income (loss)         $   1.7         $   2.3           $  (0.6)         $   0.1          $   0.7
                                ============================================================================

EPS                             $   0.11        $   0.15          $  (0.04)        $   0.01         $   0.05
                                ============================================================================


* EXCLUDES NONRECURRING CHARGE
                                                                              28


     AMERICAN                              CONDENSED CONSOLIDATED BALANCE SHEETS
MEDICAL SECURITY                                                   (IN MILLIONS)
Rx for Good Health




                                                                                 March 31,
                                                                              2001       2000
                                                                            -------------------
                                                                                  
ASSETS:

Cash and invested assets                                                    $ 278.4     $ 284.6
Goodwill and intangibles                                                      106.7       110.4
Other assets                                                                   79.4        88.8
                                                                            --------------------
        Total assets                                                        $ 464.5     $ 483.8
                                                                            ====================

LIABILITIES AND SHAREHOLDERS' EQUITY:

Medical and other benefits payable                                          $ 133.3     $ 150.5
Notes payable                                                                  40.9        42.1
Other liabilities                                                              72.0        69.6
                                                                            --------------------
        Total liabilities                                                     246.2       262.2

Shareholders' equity                                                          218.3       221.6
                                                                            --------------------

        Total liabilities and shareholders' equity                          $ 464.5     $ 483.8
                                                                            ====================


                                                                              29


     AMERICAN                                               OTHER FINANCIAL DATA
MEDICAL SECURITY
- -----------------
Rx for Good Health


                                                        AS OF
                                            -------------------------------
                                            12/31/99   12/31/00  3/31/01
                                            -------------------------------
Book Value per Share                         $14.86     $15.77    $15.54

Tangible Book Value                           $7.69      $8.24     $7.97
per Share

Debt to Total Capital Ratio                   16.2%      15.7%     15.8%

Risk-Based Capital                             339%       389%      385% est.

                                                                              30



     AMERICAN                                               FINANCIAL HIGHLIGHTS
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Earnings per Share

        - 1Q 2001                       $0.05*

        - Projections
                - 2Q 2001               $0.06 - $0.08

                - Full year 2001        $0.35 - $0.45*

* Excluding 1Q 2001 $0.41 non-recurring charge
                                                                              31


     AMERICAN                                               FINANCIAL HIGHLIGHTS
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Investment Considerations

        - Growing MedOne business

        - Leader in small group market

        - Profitable dental business

        - Strong systems and back office

        - High book value
                - Book value of $15.54 per share on 3/31/2001
                - Tangible book value of $7.97 per share on 3/31/2001

        - Effective action plans in place

        - Low debt to total capital ratio - 15.8%

                                                                              32


     AMERICAN                                                 CAUTIONARY FACTORS
MEDICAL SECURITY
- -----------------
Rx for Good Health


- -- Risks and uncertainties that may affect future results
     - Inability to successfully  implement the Company's  business plan, attain
     new business sales goals  (particularly for MedOne and dental products) and
     maintain acceptable profit margins
     - Rising medical costs and increased  utilization  of medical  services and
     prescription drugs
     - Competitive practice and demand for the Company's products
     - Changes  in the  Company's  relationship  with key sales  agents  and the
     ability  of the  Company  to expand  its  distribution  network  for MedOne
     products
     -  Developments  in health care reform and changes in insurance  and health
     care regulations and other regulatory issues
     - General economic conditions affecting consumer spending and the Company's
     investment performance - Outcome of commercial and other litigation - Other
     factors referred to in the Company's  reports filed with the Securities and
     Exchange Commission from time to time

                                                                              33





                                    AMERICAN
                                MEDICAL SECURITY
                               RX for Good Health






                                    SIGNATURE



   Pursuant to the requirements of the Securities Exchange Act of 1934, the
   Registrant has duly caused this report to be signed on its behalf by the
   undersigned thereunto duly authorized.


Dated:  MAY 18, 2001          AMERICAN MEDICAL SECURITY GROUP, INC.




                              /S/  GARY D. GUENGERICH
                              --------------------------------------------------
                              Gary D. Guengerich
                              Executive Vice President & Chief Financial Officer