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), which is headquartered in Valhalla, New York and includes hospitals across seven campuses, 60 ambulatory care sites, nearly 13,500 employees and nearly 3,000 attending physicians.