John Leddy


Dr. John Leddy is President of the International Concussion Society. He is a Professor of Clinical Orthopaedics and Rehabilitation Sciences at the University at Buffalo Jacobs School of Medicine and Biomedical Sciences. He is the Medical Director of the University at Buffalo Concussion Management Clinic, the Director of Outcomes Research for the UBMD Department of Orthopaedics and Sports Medicine at the University at Buffalo, and the former Program Director of the University at Buffalo Sports Medicine Fellowship. He received his BS degree in Biology from Fordham University and his MD from the University at Buffalo. He completed his Internal Medicine residency at New England Deaconess Hospital and Harvard University and a Faculty Development Sports Medicine fellowship at the University at Buffalo and Union Memorial Hospital in Baltimore. Along with Barry Willer, PhD, Dr. Leddy developed the Buffalo Concussion Treadmill Test, the first standardized treadmill test in the U.S. to determine a concussed patient’s exercise tolerance and to prescribe sub-threshold exercise treatment to speed recovery. In 2016, Dr. Leddy received the Best Overall Research Award from the American Medical Society for Sports Medicine. He is a member of the NIH (NINDS) Sports Concussion CDE Working Group and previously served on the Expert Panel for the Fifth International Consensus Conference on Concussion in Sport held in Berlin.