Exhibit 23.1 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, 333-60986, 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 February 27, 2002 appearing on page 48 of this Form 10-K. PRICEWATERHOUSECOOPERS LLP Houston, Texas March 28, 2002