Dr. MacGillivray is an Associate Attending Orthopedic Surgeon at Hospital for Special Surgery and NewYork-Presbyterian Hospital. He currently serves as Team Physician to the US Ski Team. He has also served as an Orthopedic Consultant for the New York Giants, the National Hockey League Players' Association team physician for St. John's University, the New York Saints Professional La Crosse Team and the US Snow Boarding Team. He is also a member of the Board of Directors at the Carlos Otis Clinic, Stratton Mountain in Vermont.