MARK J. STEINBERG, DDS, MD, FACS, received his dental degree from Northwestern University School of Dentistry and later earned an MD degree from Hahnemann University School of Medicine in Philadelphia. He is board certified by the American Board of Oral and Maxillofacial Surgery. Dr. Steinberg maintains an academic appointment as clinical professor of surgery at Loyola University Medical Center in addition to a private practice with offices in Northbrook and Lake Forest, Illinois.