Dr. Rosenthal attended New York University for his undergraduate degree and the Columbia University College of Dental Medicine for his doctorate in dental surgery. He has a postgraduate specialty from Columbia University College of Dental Medicine in pediatric dentistry. He has been practicing dentistry on Long Island since 1978 and at his current office in West Islip since 1986. He is the Attending Pediatric Dentist at Good Samaritan Hospital Medical Center, which is also in West Islip. Dr. Rosenthal is a member of the American Dental Association, the Suffolk County Dental Society, and the American Academy of Pediatric Dentistry.