He is currently on staff at St. Mary Medical Center in Langhorne, Temple Lower Bucks Hospital in Bristol, and Nazareth Hospital in Philadelphia, all in Pennsylvania. He has served as the medical director of the St. Mary Sleep/Wake Disorders Center since it opened in 1994.
Dr. Lee is a Diplomate of the American Board of Internal Medicine, the American Board of Internal Medicine, Pulmonary Disease, and the American Board of Sleep Medicine. He is a member of the American Thoracic Society, the American College of Chest Physicians, the Bucks County Medical Society, and the American Sleep Disorders Society.