Brian Feeley, MD is the Chief of the Sports Medicine and Shoulder Service and is currently a Professor in Residence. He grew up in the Bay Area and received his Bachelor of Science degree from Stanford University and his medical degree from Stanford University School of Medicine before serving his residency in the UCLA Department of Orthopedic Surgery. He completed a sports medicine and shoulder fellowship at the Hospital for Special Surgery in New York City, where he also served as an assistant team physician to the New York Giants. He has been at UCSF since 2008, and currently serves at the team physician at St. Ignatius High School. Dr. Feeley performs research on common shoulder and knee problems. In the shoulder, he is studying the molecular mechanisms that are responsible for the development of muscle atrophy after rotator cuff tears. He runs an NIH-funded lab studying how muscle stem cells result in changes to the muscle tissue, and how to stimulate these cells to differentiate in ways to improve muscle function.