Nam Woo Cho, MD, PhD Radiation Oncologist, UCSF Biography Nam Woo Cho, MD, PhD, specializes in treating lung and skin cancers. He earned his undergraduate degree from Harvard and completed MD/PhD training at the University of Pennsylvania. He trained in Internal Medicine at St. Mary’s (San Francisco) and completed residency in Radiation Oncology at UCSF. Dr. Cho’s research focuses on the immune mechanisms activated by radiation and checkpoint blockade. He integrates molecular, organismal, and computational tools to advance novel radio- and immunotherapeutics.