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