EXHIBIT 23.6
 
                        CONSENT OF GOLDMAN, SACHS & CO.
 
PERSONAL AND CONFIDENTIAL
 
May 10, 1999
 
Board of Directors
Physician Reliance Network, Inc.
Two Lincoln Centre
5420 LBJ Freeway
Suite 900
Dallas, TX 75240
 
Re: Registration Statement of American Oncology Resources, Inc. relating to the
shares of common stock being registered in connection with the below referenced
Agreeement and Plan of Merger.
 
Ladies and Gentlemen:
 
   Reference is made to our opinion letter dated May 10, 1999 with respect to
the fairness from a financial point of view to the holders of the outstanding
shares of Common Stock, no par value per share (the "Shares"), of Physician
Reliance Network, Inc. (the "Company") of the exchange ratio of 0.94 shares of
Common Stock, par value $0.01 per share, of American Oncology Resources, Inc.
("AORI") to be received for each Share pursuant to the Agreement and Plan of
Merger, dated as of December 11, 1998, among AORI, Diagnostic Acquisition,
Inc., a wholly-owned subsidiary of AORI, and the Company.
 
   The foregoing opinion letter is provided for the information and assistance
of the Board of Directors of the Company in connection with its consideration
of the transaction contemplated therein and is not to be used, circulated,
quoted or otherwise referred to for any other purpose, nor is it to be filed
with, included in or referred to in whole or in part in any registration
statement, proxy statement or any other document, except in accordance with our
prior written consent. We understand that the Company has determined to include
our opinion in the above-referenced Registration Statement.
 
   In that regard, we hereby consent to the reference to the opinion of our
Firm under the captions "Summary," "The Merger--Background of the Merger," "The
Merger--PRN's Reasons for the Merger" and "The Merger--Opinion of PRN's
Financial Advisor" and to the inclusion of the foregoing opinion in the Joint
Proxy Statement/Prospectus included in the above mentioned Registration
Statement. In giving such consent, we do not hereby admit that we come within
the category of persons whose consent is required under Section 7 of the
Securities Act of 1933 or the rules and regulations of the Securities and
Exchange Commission thereunder.
 
                                        Very truly yours,
 
                                        /s/ Goldman, Sachs & Co.
                                        _______________________________________
                                        (GOLDMAN, SACHS & CO.)