Our growing, highly collaborative Orange County department features a dedicated team of clinical professionals, including Radiation Oncology Physicians, Dosimetrists, Radiation Therapists, Nurses, Physicians Assistants, and back office staff (Billers, Assistants, Schedulers). City of Hope's growing national system includes its Los Angeles campus, a network of clinical care locations across Southern California, our cancer center in Orange County, California, and treatment facilities in Atlanta, Chicago and Phoenix.