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, 333-30057, 333-80977, 333-81069, 333-85859, 333-85853 and 333-85855) of US Oncology, Inc., formerly known as American Oncology Resources, Inc. of our report dated March 21, 2000 appearing on page 24 of this Form 10-K. PRICEWATERHOUSECOOPERS LLP Houston, Texas March 24, 2000