Clinical Professor Orthopedic Surgery, University of Pennsylvania where he is the Chief of the Division of Orthopedic Foot and Ankle Surgery and served as Director of the Orthopaedic Foot and Ankle Fellowship Program. He has published 98 peer reviewed articles and authored 41 textbook chapters related to Foot and Ankle Surgery. He has had numerous positions within the American Orthopedic Foot and Ankle Society (AOFAS) serving on the Board of Directors and as President in 2010-2011. He continues to serve on the Board of Directors of Foot & Ankle International.