St. Mary's Medical Center Radiation Oncology Department is a cancer center that offers many services, including cancer treatment, advanced imrt/3d treatment, and brachytherapy. Visit St. Mary's Medical Center Radiation Oncology Department located at 2250 Hayes St, San Francisco, CA. This San Francisco cancer center is one of the best in California. As part of the Dignity Health network, St. Mary's Medical Center Radiation Oncology Department is dedicated to delivering high quality, compassionate care and access to San Francisco and nearby communities.