UCSD Radiation Oncology South Bay in Chula Vista is UC San Diego Health's academic cancer treatment center on Lane Avenue, registered as a radiation oncology facility under NPI 1306083993 since 2009. Board-certified radiation oncologists treat head-and-neck, CNS, prostate, and skin tumors using IMRT, IGRT, stereotactic body radiotherapy, and cranial stereotactic radiosurgery, with cardio-oncology surveillance for chest-field protocols coordinated alongside Cardiovascular Institute of San Diego. Electronic brachytherapy for superficial skin cancer treatment and bilingual patient navigation in English and Spanish distinguish the South Bay facility from larger hospital-based radiation departments. Patients receiving multi-fraction radiation courses benefit from the center's position on the Medical Center Drive corridor, where pre- and post-treatment lab work and inpatient support flow through Scripps Mercy Hospital Chula Vista less than two miles away. Cranial stereotactic radiosurgery targets CNS tumors with high-precision beam shaping in as few as one to five fractionated sessions, using real-time image-guided verification to conform dose distribution around tumor boundaries while preserving surrounding healthy tissue.