As a leader in the field of health services research, Dr. Murphy has ongoing project focusing on identifying and reducing health disparities, creating patient-based risk assessment tools, and defining the patterns of care of radiation across the US on a population-based level. He is the principal investigator of clinical trials involving pancreatic cancer, and he serves as the site principal investigator of national cooperative group trials. A dedicated clinical researcher, he has published over 190 journal articles and previously served as an Associate Editor (GI Cancers) of the International Journal of Radiation Oncology, Biology and Physics. In addition to his research work, he is a dedicated clinician and has been recognized as a Top Doctor by the San Diego Magazine.