Dr. Lemchen is a graduate of Tufts University School of Dental Medicine and is a board-certified orthodontist. He is affiliated with several of New York's leading hospitals, including Lenox Hill Hospital, where he served as Co-Chief of the Orthodontics Department, New York Presbyterian Hospital, Cornell Medical College and St. Luke's Roosevelt Hospital. He is also a Fellow of the American College of Dentistry. After 25 years of practicing orthodontics, Dr. Lemchen holds several important scientific patents and continues to be an innovator in his field.