John Dever, MD, is a board-certified gastroenterologist who diagnoses and treats patients with acid reflux, irritable bowel syndrome, inflammatory bowel disease, and other diseases of the esophagus, stomach, small intestine, colon, pancreas, gallbladder, bile ducts and liver. Dr. Dever focuses on wellness, diagnostic and therapeutic endoscopy, optimal patient experiences, colon cancer prevention, brain-gut disorders, and longevity.

Dr. Dever completed a fellowship in gastroenterology at UCSF School of Medicine (Fresno) and a residency in internal medicine at Virginia Mason Medical Center in Seattle. He earned his medical degree from Saba University School of Medicine.  Dr. Dever is board certified in gastroenterology and internal medicine.

Dr. Dever was clinical faculty at UC San Diego School of Medicine from 2015 to 2022 and trained medical students, residents, and fellows.  Prior to leaving, the Department of Medicine (DOMCAP) voted unanimously for his promotion to Associate Clinical Professor.  His research has been published in multiple top peer-reviewed journals.  Dr. Dever had the highest adenoma detection rate (67%) among peers.  He received the highest teacher rating in 2017 and was an appointed mentor for the UCSD Bridge Program for Scholars.  Dr. Dever was also a member of the patient safety committee.

Dr. Dever joined Saltzer in 2022 and was appointed director of Gastroenterology.

Dr. Dever is a member of the American College of Gastroenterology, the American Gastroenterology Association, and the American Society for Gastrointestinal Endoscopy.

Outside of work, Dr. Dever enjoys spending time with his family, traveling, bicycling, reading, and gardening.