Exhibit 23(a) CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No.'s 333-778, 333-780, 333-782, 333-784, 333-786 and 333-30057) of American Oncology Resources, Inc. of our report dated March 11, 1998 appearing on page 23 of this Form 10-K. PRICE WATERHOUSE LLP Houston, Texas March 11, 1998