Jon R. Cohen, M.D. is a physician currently the Senior Vice President, and Chief Medical Officer and Director of the Hospital Services line of business of Quest Diagnostics, a company specializing in diagnostic testing, information, and services.. Dr. Cohen is a vascular surgeon having completed his residency in surgery at New York Presbyterian Hospital/Weill Cornell Medical Center and vascular surgery fellowship at the Brigham and Women's Hospital at Harvard Medical School in Boston. He has published over 100 peer-reviewed professional articles and authored two books. In 2010, he was named as one the nation's top 50 most powerful physician executives by Modern Healthcare. He is past President of both the New York Surgical Society and the New York Society for Cardiovascular Surgery.