Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alfredo Alejandro Santillan-Gomez, M.D., M.P.H:

Surgical Oncology Physician in San Antonio, TX · enumerated 2007.

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

National Provider Identifier

1124213400

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Registry record

Entity type Individual (Type 1)

Name Dr. Alfredo Alejandro Santillan-Gomez

Credential M.D., M.P.H:

Sex Male

Practice address 5206 Research Dr, San Antonio, TX, 78240

Phone (210) 295-5300

Fax (210) 614-8740

Enumeration date Sep 11, 2007

Last updated in NPPES Jul 29, 2022

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License M8315 (TX) Secondary

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License M8315 (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
P01587661	Other	TX	RAILROAD
188777003	Medicaid	TX	-
206018802	Other	TX	CSHCN
206018801	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

How do I verify Alfredo Santillan-Gomez's NPI record?

Cross-check NPI 1124213400 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1124213400 active?

Yes, as of the latest NPPES snapshot, NPI 1124213400 is active (record last updated 2022-07-29).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-29.