Dr. John M. Zeroogian is a gastroenterologist in Pasadena, California and is affiliated with Huntington Health Medical Center-Pasadena. He received his medical degree from University of Pittsburgh School of Medicine and has been in practice for more than 20 years. Dr. John M. Zeroogian has expertise in treating colonoscopy, upper gi endoscopy, inflammatory bowel disease (ibd), among other conditions - see all areas of expertise. Dr. John M. Zeroogian accepts Medicare, Aetna, Humana, Blue Cross - see other insurance plans accepted. Dr. John M. Zeroogian is highly recommended by patients.