Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John G. Gancayco, M.D.

Gastroenterology Physician in Jbsa Ft Sam Houston, TX · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1609089390

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Registry record

Entity type Individual (Type 1)

Name John G. Gancayco

Credential M.D.

Sex Male

Practice address 3551 Roger Brooke Dr, Jbsa Ft Sam Houston, TX, 78234

Phone (210) 916-2338

Enumeration date May 8, 2007

Last updated in NPPES Jan 17, 2020

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 0101241245 (VA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 0101241245 (VA) Secondary

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License R1954 (TX) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
375517503	Other	TX	CSHCN
375517502	Medicaid	TX	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for John Gancayco?

The National Provider Identifier (NPI) for John Gancayco is 1609089390, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Gancayco practice?

The practice location on file with NPPES is in Jbsa Ft Sam Houston, TX. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Lan-Anh Ngo Family Medicine Physician · Jbsa Ft Sam Houston, TX NPI 1114922903 Lori Thelen Family Medicine Physician · Fort Sam Houston, TX NPI 1285633966 Cynthia Jones Occupational Therapist · Fort Sam Houston, TX NPI 1275532723 John Pena Medical Physician Assistant · Fort Sam Houston, TX NPI 1700885373 Denise Fricchione Medical Physician Assistant · Fort Sam Houston, TX NPI 1285633511 Kathryn Joyce Family Nurse Practitioner · Fort Sam Houston, TX NPI 1235139494 Barry Steever Adult Health Nurse Practitioner · San Antonio, TX NPI 1568463099 Kyle Friedman Anesthesiology Physician · Fort Sam Houston, TX NPI 1053303206

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-17.