WMCHealth Physicians Radiation Oncology at Westchester Medical Center is a full-service radiation oncology cancer treatment center in Valhalla, NY. Services include External Beam Radiation, Conformal Radiation Therapy, Intensity Modulated Radiation Therapy, Brachytherapy/Internal Radiation, Hyperthermia, Sterotactic Radiosurgery, and Chemoradiation. WMCHealth Physicians Radiation Oncology is a member of the Westchester Medical Center Health Network (WMCHealth), a 1,700-bed healthcare system headquartered in Valhalla, New York, with nine hospitals on seven campuses spanning 6,200 square miles of the Hudson Valley.