Radiation Therapist I/II - Radiation Oncology (South Pasadena) (Per Diem) (Days) Join the transformative team, where we're changing lives and making a real difference in the fight against cancer, diabetes, and other life-threatening illnesses. 's growing national system includes its Los Angeles campus, a network of clinical care locations across Southern California, a new cancer center in Orange County, California, and treatment facilities in Atlanta, Chicago and Phoenix.