Dr. Sierra L. Williams-Barnhart

Joan Walker is an Oncologist practicing medicine in Oklahoma City, Oklahoma. She has been practicing medicine for over 44 years. Dr. Walker is highly rated in 17 conditions, according to our data. Her clinical expertise encompasses Virilizing Ovarian Tumor, Ovarian Carcinosarcoma, Sertoli-Leydig Cell Tumor, Gamma Knife Radiosurgery, and Ureteroscopy. Dr. Walker is currently accepting new patients.

Board certified in both medical oncology and internal medicine, Aleda Toma, MD is a member of Cancer Specialists of Oklahoma, a part of SSM Health St. Anthony. She cares for patients in north Oklahoma City and surrounding areas, as well as Shawnee, Okla. Dr. Toma is highly rated in 53 conditions, according to our data. Her clinical expertise encompasses Breast Cancer, Paget Disease of the Breast, Colorectal Cancer, and Familial Colorectal Cancer. Dr. Toma is board certified in Oklahoma State Board Of Medical Licensure & Supervision, American Board Of Internal Medicine/Medical Oncology , American Board Of Internal Medicine , Drug Enforcement Administration , and Oklahoma Bureau Of Narcotics And Dangerous Drugs . Dr. Toma is currently accepting new patients.

Michael Keefer is an Oncologist practicing medicine in Oklahoma City, Oklahoma. Dr. Keefer is highly rated in 80 conditions, according to our data. His clinical expertise encompasses Osteosarcoma, Chondrosarcoma, Ewing Sarcoma, Paget Disease of the Breast, and Bone Marrow Aspiration. Dr. Keefer is currently accepting new patients.