Dr. Carlton W. Thomas is a gastroenterologist in San Diego, California and is affiliated with multiple hospitals in the area, including Scripps Mercy Hospital and Sharp Mary Birch Hospital for Women and Newborns. He received his medical degree from Medical University of South Carolina College of Medicine and has been in practice for more than 20 years. Dr. Carlton W. Thomas has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. Carlton W. Thomas accepts Medicare, Aetna, Humana, Blue Cross, United Healthcare - see other insurance plans accepted.