Col John Gancayco is the Program Director for the San Antonio Uniformed Services
Health Sciences Consortium (SAUSHEC) gastroenterology fellowship program. He is responsible
for the education and training of the Air Force and Army gastroenterology fellows at Brooke
Army Medical Center (BAMC). The SAUSHEC Gastroenterology Fellowship program is one of the
largest Department of Defense medicine subspecialty training programs and one of the largest
clinical gastroenterology training programs in the U.S. The program has a six year 100 percent
first time board pass rate. Lt Col Gancayco has trained 36 board certified gastroenterologists.
Col Gancayco entered the Air Force in 2001 as a medical student at USUHS in Bethesda,
MD. He received his undergraduate degree from Georgetown University in Washington, D.C.
Prior to medical school, he received a Post-baccalaureate Intramural Research Training Award
to study DNA repair in cancer patients at the National Institutes of Health. He completed his
Internal Medicine residency at Wilford Hall Medical Center. He then completed his
gastroenterology fellowship at Yale New Haven Hospital. He then served as Chief of
Gastroenterology at Okinawa Naval Hospital as the only gastroenterologist in the West Pacific
for over 170,000 beneficiaries. He deployed as an intensivist to Afghanistan in support of
Operation Enduring Freedom in 2016-17. Prior to his current assignment, he served as
Associate Program Director for gastroenterology fellowship for two years at BAMC.
In 2021, Col Gancayco was awarded the Lieutenant General Monte Miller Award by the
American College of Physicians Air Force Chapter for contributions to the Air Force Medical
Service. He has authored 11 peer reviewed publications. He has been the primary investigator
for 16 phase III clinical trials in gastroenterology advancing the care of inflammatory bowel
disease.