Dr. Augustus "Gus" Mazzocca is the newly appointed medical director of Mass General Brigham Sports Medicine and is also the chief of Mass General's Sports Medicine Service and the director of the Bioskills, Biomechanics and Cell Biology Laboratories within the Department of Orthopaedic Surgery at Massachusetts General Hospital. Alongside these posts, Dr. Mazzocca serves on the faculty of orthopaedic surgery at Harvard Medical School.

Dr. Mazzocca earned his Bachelor of Science degree in biology from Denison University, a Master of Science in applied physiology from Springfield College and his medical degree from the University of Connecticut School of Medicine. He completed an internship and residency with the Department of Orthopaedic Surgery at the University of Connecticut School of Medicine, as well as a fellowship in Sports, Shoulder and Elbow Surgery at Rush University in Chicago.

Dr. Mazzocca is an internationally renowned shoulder and elbow clinician specializing in complex joint injuries and conditions. Dr. Mazzocca comes to Mass General from the University of Connecticut Health Center, where he was director of the UCONN Health Musculoskeletal Institute and professor of orthopaedic surgery. As a professor, he was the Orthopaedic Teacher of the Year in 2013 and 2021. Dr. Mazzocca played an active mentor role in UCONN's Orthopaedic Residency program since 2002, serving at times as director and assistant director of the program. He has served on numerous masters and PhD committees and has mentored hundreds of fellows, residents and other graduate students over his long career. In his UCONN role, he also served as team physician for UCONN Athletics and orthopaedic director for the state of Connecticut's Department of Corrections.

Dr. Mazzocca has dedicated his non-clinical life to education, research and his family, which is most important to him. He is a member of the prestigious American Orthopaedic Society for Sports Medicine (AOSSM), American Shoulder and Elbow Surgeons Society (ASES), The International Society of Arthroscopy, Knee Surgery and Orthopedic Sports medicine (ISAKOS), as well as being a member of the European Society for Surgery of the Shoulder and Elbow (ESSSE). He and colleague Jon J.P. Warner, MD, co-founded the New England Shoulder and Elbow Society (NESES), which is a regional society dedicated to educating and researching problems related to the shoulder and elbow. He is the founder and was the director of the University of Connecticut Human Soft Tissue Research Laboratory, and he has published over 250 peer-reviewed journal articles.