Dr. Jo A. Hannafin is board certified in orthopedic surgery and sports medicine. She is an orthopedic surgeon at HSS and a Professor in the Department of Orthopedic Surgery at Weill Cornell Medical College. Dr. Hannafin was a USOC physician for the 2004 Olympic Games in Athens, Greece, and the 2003 Pan American Games in the Dominican Republic. She was a Team Physician for the United States Rowing Team and an event physician at the 1996 Atlanta Olympic Games (rowing) and the New York City Marathon. Dr. Hannafin was a team physician for the WUSA New York Power from 2000-2003 and an Assistant Team Physician to the New York Mets from 1992-1996. She was team physician to the U.S. Rowing Team and is the Chair of the USRowing Sports Medicine Committee. She also serves as a member of the FISA Medical Commission and has served as a FISA Medical Officer at multiple World Championship and World Cup events in addition to the 2012 London Olympic Games. Dr. Hannafin was a member of the silver medalist lightweight double at the 1984 World Rowing Championships and a three-time gold medalist at the U.S. National Rowing Championships. She is currently the Vice President of the Board of Trustees of the National Rowing Foundation.