Associate Professor of Radiation Oncology and Urology. He is the Vice Chair of Surgical Services and Brachytherapy Service Chief for the Department of Radiation Oncology at the David Geffen School of Medicine at UCLA and the UCLA Jonsson Comprehensive Cancer Center. Dr. Chang received his Ph.D. in Molecular Medicine and M.D. degrees from the Boston University School of Medicine. He completed his residency at the Washington University School of Medicine, and then joined the faculty at the University of California, San Francisco as an Assistant Professor. His clinical focus is on malignancies of the genitourinary and gynecological systems and specialized in high dose rate (HDR) brachytherapy.