Dr. Lyon is a graduate of the University of Chicago and the Pritzker School of Medicine.  Dr. Lyon has a private practice, Vascular and Endovascular Private Practice, Vein Specialists of New York, and has been an Attending in Surgery at Jacobi Medical Center and North Central Bronx Hospital, New York Hospital, Montefiore Medical Center, and Weiler Hospital of the Albert Einstein College of Medicine, where he was an Assistant Professor, in addition to being an Associate Professor of Surgery at Weill-Cornell College of Medicine.