Beryl McCormick is Chief of the External Beam Radiotherapy Service in Manhattan.
Beryl McCormick has served since 2001 as Clinical Director of Radiation Oncology in Manhattan and was responsible for the day-to-day clinical operations at Memorial Sloan Kettering's main campus and assisted in implementing and monitoring new treatment techniques. From 2005 to 2008, she also served as Acting Chair of the Department of Radiation Oncology. She is a board-certified radiation oncologist who specializes in treatment for breast cancer and cancer of the eye (retinoblastoma and ocular melanoma). Dr. McCormick received her MD degree in 1973 from New Jersey College of Medicine. She came to Memorial Sloan Kettering as a resident in 1974 and joined the faculty in 1980.