Helen Shih, MD, MS, MPH, FASTRO, is a practicing radiation oncologist at Massachusetts General Hospital. Before MGH, Dr. Shih earned her undergraduate degree in biology at Brown University, and medical school education at the University of Pennsylvania, where she also earned a Master's Degree in Cell & Molecular Biology. She completed an internship at Beaumont Hospital, Royal Oak, MI, before radiation oncology residency at MGH. She has a Master's in Public Health from the Harvard School of Public Health.

Dr. Shih remained on staff at MGH after her training and is the Director of the Central Nervous System & Eye Services. She cares for the full range of patients with benign to malignant diagnoses and both primary and metastatic diseases. She is a Professor of Radiation Oncology at Harvard Medical School and is the Medical Director of the MGH Proton Therapy Centers.

Dr. Shih's research interests are in clinical and translational efforts to better define radiation therapy's role in managing her broad spectrum of patients. Subspecialty interests include improving our understanding and use of proton therapy and understanding the effects of ionizing radiation on normal tissues, primarily the brain, and how best to reduce the risk of radiation-associated injury. Yet another area of interest is addressing drug addiction through education to reduce stigma, novel research efforts towards better prevention and treatment, and advancing community-based services.