Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John G. Gancayco, MD

Individual provider Gastroenterology Physician · NPI 1609089390

John G. Gancayco, MD is a Gastroenterology in Jbsa Ft Sam Houston, Texas. Graduated from Uniformed Services Uhs Fe Hebert School of Med in 2005, 21 years ago. Practices with Texas Digestive Disease Consultants, PLLC, a 615-clinician group and accepts Medicare assignment. Licensed in Texas and Virginia.

Years since qualifying
21
Trained at
Uniformed Services Uhs Fe Hebert School of Med
Licensed in
TX, VA
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

3551 Roger Brooke Dr
Jbsa Ft Sam Houston, TX 78234
Phone: (210) 916-2338
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence R1954 (TX)
Gastroenterology Physician Taxonomy 207RG0100X · Licence 0101241245 (VA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101241245 (VA)

Record details

NPI number1609089390
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 8, 2007
Last updated in NPPESJanuary 17, 2020
Certification dateJanuary 17, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIFORMED SERVICES UHS FE HEBERT SCHOOL OF MED
Graduated 2005 (21 years in practice)
Group practice Texas Digestive Disease Consultants, Pllc — 615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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