The 21st Century Oncology location in Anaheim, California, is a cancer clinic that provides patients with radiation therapy for a variety and range of cancers and stages. Located on the campus of the Anaheim Regional Medical Center, we treat the whole person, not a disease. From treatment through recovery, our patients work with an integrated care team that keeps primary care physicians and referring specialists informed about all care decisions. Our patients also benefit from the shared knowledge of over 750 physicians in our network, and the clinical research they conduct in the field of radiation oncology. 21st Century Oncology is a physician-led company headquartered in Fort Myers, Florida that operates over 180 radiation therapy cancer clinics across many U.S. states.