Ronnie Fass, MD, FACP, FACG, is Director of the GI Motility Laboratory at the University of Arizona Health
Sciences Center in Tucson and Professor of Medicine at the University of Arizona in Tucson.
Dr. Fass earned his medical degree from the Faculty of Health Sciences at Ben-Gurion University of the
Negev in Beer-Sheeva, Israel and completed an internship and residency in internal medicine at the
University of Arizona Health Sciences Center. A fellowship in gastroenterology was completed at the
University of California, Los Angeles.
Dr. Fass is active in research and presently serves as principal investigator on a number of clinical trials
including the role of pain modulation in patients with gastroesophageal reflux disease (GERD) who
failed proton pump inhibitors and several studies related to the relationship between GERD and sleep.
A frequent lecturer and presenter, Dr. Fass is a reviewer for 60 journals and is on the editorial board of
12 journals. He has published more than 350 abstracts, editorials, and articles in journals such as
Gastroenterology, Gut, American Journal of Gastroenterology, and Archives of Internal Medicine,
and has published 28 book chapters and 2 books. Dr. Fass is a fellow of the American College of
Gastroenterology and the former chair of the Gastroenterology Practice Parameter Committee. He is also
a fellow of the American College of Physicians and a member of the American Motility Society. He was
awarded the American Gastroenterological Association/Janssen Award for Digestive Sciences in
Clinical or Basic Research and the Department of Veteran Affairs, Investigator of the Year award.
- Professor of Medicine
Director, GI Motility Laboratory
Southern Arizona VA Health Care System
University of Arizona Health Sciences Center