Exhibit 10(f)
                                                             Amendment to Credit
                                                                   Agreement

                                                                  CONFORMED COPY


                       AMENDMENT NO. 1 TO CREDIT AGREEMENT


     AMENDMENT dated as of July 25, 1997 to the Credit Agreement dated as of
January 30, 1997 (the "CREDIT AGREEMENT") among TENET HEALTHCARE CORPORATION
(the "BORROWER"), the LENDERS, MANAGING AGENTS and CO-AGENTS party thereto, the
SWINGLINE BANK party thereto, THE BANK OF NEW YORK and THE BANK OF NOVA SCOTIA,
as Documentation Agents, BANK OF AMERICA NATIONAL TRUST AND SAVINGS ASSOCIATION,
as Syndication Agent, and MORGAN GUARANTY TRUST COMPANY OF NEW YORK, as
Administrative Agent (the "ADMINISTRATIVE AGENT").

                              W I T N E S S E T H :

     WHEREAS, the parties hereto desire to amend the Credit Agreement to (i)
modify the definition of Consolidated EBITDA so that certain charges incurred by
the Borrower in the third and fourth quarters of 1997 and certain non-cash and
merger-related charges that may be incurred by the Borrower will be excluded in
calculating the amount thereof, (ii) exclude the effect of certain charges
incurred in the third and fourth quarters of 1997 on the Borrower's Consolidated
Net Worth for purposes of compliance with the minimum Consolidated Net Worth
covenant and (iii) permit the Borrower to prepay, defease or redeem certain Debt
that is subordinated in right of payment to the Loans;

     NOW, THEREFORE, the parties hereto agree as follows:

     SECTION 1. DEFINED TERMS; REFERENCES. Unless otherwise specifically defined
herein, each term used herein which is defined in the Credit Agreement has the
meaning assigned to such term in the Credit Agreement. Each reference to
"hereof", "hereunder", "herein" and "hereby" and each other similar reference
and each reference to "this Agreement" and each other similar reference
contained in the Credit Agreement shall, after this Amendment becomes effective,
refer to the Credit Agreement as amended hereby.

     SECTION 2. CONSOLIDATED EBITDA. The definition of "Consolidated EBITDA" in
Section 1.01 of the Credit Agreement is amended to read as follows:


                                        


          "Consolidated EBITDA" means, for any period of four consecutive Fiscal
     Quarters, the sum of (i) the consolidated net income of the Borrower and
     its Subsidiaries for such period plus (ii) to the extent deducted in
     determining such consolidated net income, the sum of (A) interest expense,
     (B) income taxes, (C) depreciation and amortization expenses, (D) other
     non-cash charges (other than those non-cash charges that reflect a past
     expenditure of cash (such as prepaid expenses and other similar charges) or
     future expenditure of cash) and (E) merger-related charges, all determined
     on a Pro Forma Basis; PROVIDED that Consolidated EBITDA shall be calculated
     so as to exclude the effect of (w) any gain or loss that is classified as
     extraordinary in accordance with GAAP, (x) any gain or loss from any sale
     or other disposition of any Healthcare Facility, any Healthcare Business or
     any Equity Interest in any Person and (y) non-recurring charges recorded by
     the Borrower in the third and fourth Fiscal Quarters of 1997.

     SECTION 3. CONSOLIDATED NET WORTH. Section 5.10 of the Credit Agreement is
amended to read as follows:

          Section 5.10. CONSOLIDATED NET WORTH.  Consolidated Net Worth will at
     no time be less than the sum of (i) $2,750,000,000 PLUS (ii) 75% of the
     consolidated net income of the Borrower and its Subsidiaries for each
     Fiscal Quarter ended after November 30, 1996, if such consolidated net
     income for such Fiscal Quarter is positive (PROVIDED that, for any Fiscal
     Quarter when consolidated net income of the Borrower and its Subsidiaries
     was reduced as a result of a charge included in clause (iv), consolidated
     net income for such Fiscal Quarter shall be calculated to exclude the
     after-tax effect of such charge), PLUS (iii) 100% of the amount by which
     the consolidated stockholders' equity of the Borrower and its Subsidiaries
     is increased after November 30, 1996 as a result of any issuance or sale of
     Equity Interests by the Borrower (other than the issuance of common stock
     of the Borrower as consideration for the Acquisition), MINUS (iv) the
     amount of non-recurring charges (calculated on an after-tax basis) recorded
     by the Borrower in the third and fourth Fiscal Quarters of 1997. 

     SECTION 4. RESTRICTION ON PREPAYING SUBORDINATED DEBT. Section 5.15 of the
Credit Agreement is amended to read as follows:

          Section 5.15.  RESTRICTION ON PREPAYING SUBORDINATED DEBT.  Neither
     the Borrower nor any Subsidiary will prepay, defease or purchase, prior to
     the date on which it is required by its terms to be repaid, repurchased or
     otherwise retired, all or any portion of any Debt of the


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     Borrower that is subordinated in right of payment to the Loans; PROVIDED
     that (x) the Borrower may prepay, defease or repurchase such Debt in an
     aggregate amount not in excess of the net cash proceeds received by the
     Borrower from the issue and sale or incurrence of additional subordinated
     Debt in the 12 month period prior to, or substantially concurrently with,
     such prepayment, defeasance or repurchase, so long as such additional
     subordinated Debt has a final maturity after the final maturity of, and a
     weighted average life that is longer than the weighted average life of, the
     subordinated Debt prepaid, defeased or repurchased, and (y) in addition to
     any subordinated Debt prepaid, defeased or repurchased pursuant to clause
     (x), the Borrower may prepay, defease or repurchase such Debt so long as
     the aggregate cash (or value of property) used therefor, plus the aggregate
     amount of Restricted Payments made in accordance with Section 5.12, does
     not at any time exceed the sum of (i) $500,000,000 and (ii) 50% of the
     Borrower's cumulative consolidated net income for the period (treated as a
     single accounting period) commencing June 1, 1998 and ending on the last
     day of the last Fiscal Quarter ended prior to the date of such prepayment,
     defeasance or repurchase.

     SECTION 5. REPRESENTATIONS OF BORROWER. The Borrower represents and
warrants that (i) the representations and warranties of the Borrower set forth
in Article 4 of the Credit Agreement will be true on and as of the Amendment
Effective Date and (ii) no Default will have occurred and be continuing on such
date.

     SECTION 6. GOVERNING LAW. This Amendment shall be governed by and construed
in accordance with the laws of the State of New York.

     SECTION 7. COUNTERPARTS. This Amendment may be signed in any number of
counterparts, each of which shall be an original, with the same effect as if the
signatures thereto and hereto were upon the same instrument.

     SECTION 8. EFFECTIVENESS. This Amendment shall become effective on the date
(the "AMENDMENT EFFECTIVE DATE") when the Administrative Agent shall have
received from each of the Borrower and the Required Lenders a counterpart hereof
signed by such party or facsimile or other written confirmation (in form
satisfactory to the Administrative Agent) that such party has signed a
counterpart hereof.


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     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed as of the date first above written.



                              TENET HEALTHCARE CORPORATION


                              By:  /s/ T.P. McMullen
                                  ---------------------------------------------
                                  Title:     Treasurer

                              MORGAN GUARANTY TRUST COMPANY 
                                  OF NEW YORK


                              By:   /s/ Diana H. Imhof
                                  ---------------------------------------------
                                  Title:    Vice President


                              BANK OF AMERICA NATIONAL TRUST 
                                   AND SAVINGS ASSOCIATION


                              By:   /s/ Anthony L. Trunzo
                                  ---------------------------------------------
                                  Title:     Vice President


                              THE BANK OF NEW YORK


                              By:   /s/ Lisa Yee Brown
                                  ---------------------------------------------
                                  Title:     Vice President


                              THE BANK OF NOVA SCOTIA


                              By:   /s/ Christopher Johnson
                                  ---------------------------------------------
                                  Title:     Senior Relationship Manager


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                              THE INDUSTRIAL BANK OF JAPAN, 
                                   LIMITED, LOS ANGELES AGENCY


                              By:   /s/ Carl-Eric Benzinger
                                  ---------------------------------------------
                              Title:    Senior Vice President


                              ABN AMRO BANK N.V.
                                   LOS ANGELES INTERNATIONAL BRANCH


                              By:   /s/ Paul K. Stimpfl
                                  ---------------------------------------------
                                  Title:     Vice President


                              By:   /s/ Matthew S. Thomson
                                  ---------------------------------------------
                                  Title:     Group Vice President/Director


                              BANK OF TOKYO-MITSUBISHI TRUST COMPANY


                              By:   /s/ Jeb Beckwith
                                  ---------------------------------------------
                                  Title:     Vice President


                              THE CHASE MANHATTAN BANK


                              By:   /s/ Dawn Lee Lum
                                  ---------------------------------------------
                                  Title:     Vice President


                                        5


                              DEUTSCHE BANK NEW YORK AND/OR 
                                   CAYMAN ISLANDS BRANCHES


                              By:   /s/ Andreas Dirnagl
                                  ---------------------------------------------
                                  Title:     Vice President


                              By:   /s/ Iain Stewart
                                  ---------------------------------------------
                                  Title:     Vice Presidnet


                              THE LONG-TERM CREDIT BANK OF 
                                   JAPAN, LTD.


                              By:   /s/ T. Morgan Edwards
                                  ---------------------------------------------
                                  Title:     Deputy General Manager


                              NATIONSBANK OF TEXAS, N.A.


                              By:   /s/ Elizabeth C. Gould
                                  ---------------------------------------------
                                  Title:     Vice President

                              PNC BANK, N.A.


                              By:   /s/ Karin M. George
                                  ---------------------------------------------
                                  Title:     Vice President


                                        6


                              THE SANWA BANK LIMITED, DALLAS AGENCY


                              By:   /s/ Toru Sakamuro
                                  ---------------------------------------------
                                  Title:     Vice President


                              SOCIETE GENERALE


                              By:   /s/ J. Staley Stewart
                                  ---------------------------------------------
                                  Title:     Vice President


                              THE SUMITOMO BANK, LIMITED


                              By:   /s/ Goro Hirai
                                  ---------------------------------------------
                                  Title:     Joint General Manager


                              TORONTO DOMINION (TEXAS), INC.


                              By:   /s/ Darlene Riedel
                                  ---------------------------------------------
                                  Title:     Vice President


                              WACHOVIA BANK OF GEORGIA, N.A.


                              By:   /s/ T. Ashby Watts, IV
                                  ---------------------------------------------
                                  Title:     Vice President


                                        7


                              COMMERZBANK AG
                                   LOS ANGELES BRANCH


                              By:   /s/ John Korthuis
                                  ---------------------------------------------
                                  Title:     Vice President


                              By:   /s/ Carl Kemmerer
                                  ---------------------------------------------
                                  Title:     Assistant Treasurer


                              CREDIT LYONNAIS NEW YORK BRANCH


                              By:   /s/ Farboud Tavangar
                                  ---------------------------------------------
                                  Title:     First Vice President


                              THE DAI-ICHI KANGYO BANK, LTD.
                                   LOS ANGELES AGENCY


                              By:   /s/ Masatsugu Morishita
                                  ---------------------------------------------
                                  Title:     Senior Vice President & Joint
                                             General Manager


                              THE FUJI BANK, LIMITED


                              By:   /s/ N. Umemura
                                  ---------------------------------------------
                                  Title:     Joint General Manager



                                        8


                              KREDIETBANK N.V.


                              By:   /s/ Robert Snauffer
                                  ---------------------------------------------
                                  Title:     Vice President


                              By:   /s/ Todd R. Angus
                                  ---------------------------------------------
                                  Title:     Vice President


                              BANK OF MONTREAL


                              By:   /s/ Peter W. Steelman
                                  ---------------------------------------------
                                  Title:     Director


                              BANQUE PARIBAS


                              By:   /s/ Sean T. Conlon
                                  ---------------------------------------------
                                  Title:     Vice President


                              By:   /s/ Stanley P. Berkman
                                  ---------------------------------------------
                                  Title:     General Manager


                              CORESTATES BANK, N.A. 


                              By:   /s/ Deirdre L. McAleer 
                                  ---------------------------------------------
                                  Title:     Vice President and Team Leader


                                        9


                              CREDIT SUISSE FIRST BOSTON


                              By:   /s/ David J. Worthington
                                  ---------------------------------------------
                                  Title:     Managing Director


                              By:   /s/ Mark A. Swanson
                                  ---------------------------------------------
                                  Title:     Vice President

                              SUMITOMO BANK OF CALIFORNIA


                              By: /s/ Shuji Ito  
                                  ---------------------------------------------
                                  Title:    Vice President


                              THE ROYAL BANK OF SCOTLAND plc


                              By:   /s/ D. Dougan
                                  ---------------------------------------------
                                  Title:     Vice President


                              HIBERNIA NATIONAL BANK


                              By:   /s/ Christopher B. Pitre
                                  ---------------------------------------------
                                  Title:     Assistant Vice President

                              THE SUMITOMO TRUST & BANKING 
                                   COMPANY LTD. NEW YORK BRANCH


                              By:   /s/ Suraj P. Bhatia
                                  ---------------------------------------------
                                  Title:     Senior Vice President, Manager
                                             Corporate Finance Department


                                       10


                              BANQUE FRANCAISE DU COMMERCE EXTERIEUR


                              By:   /s/ Daniel Touffu
                                  ---------------------------------------------
                                  Title:     First VP and Regional Manager


                              By:   /s/ Iain A. Whyte
                                  ---------------------------------------------
                                  Title:     Vice President


                              BHF-BANK AKTIENGESELLSCHAFT


                              By:   /s/ Dan Dobrjanskyj
                                  ---------------------------------------------
                                  Title:     Assistant Vice President


                              By:   /s/ John D. Sykes
                                  ---------------------------------------------
                                  Title:     Assistant Vice President


                              MICHIGAN NATIONAL BANK


                              By:   /s/ Draga B. Palincas
                                  ---------------------------------------------
                                  Title:     Vice President/Relationship Manager


                              THE TOYO TRUST & BANKING CO., Ltd. 


                              By:  /s/ Kenji Fujikawa
                                  ---------------------------------------------
                                  Title:     General Manager


                                       11



                              THE TOKAI BANK LIMITED, LOS ANGELES AGENCY


                              By:   /s/ Kosuke Furukawa
                                  ---------------------------------------------
                                   Title:    Joint General Manager


                              UNITED STATES NATIONAL BANK OF OREGON


                              By:   /s/ Dale Parshall
                                  ---------------------------------------------
                                  Title:     Vice President





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