Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Timothy A Hernandez, MD

Internal Medicine Physician in San Antonio, TX · enumerated 2006.

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

National Provider Identifier

1851495584

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Registry record

Entity type Individual (Type 1)

Name Timothy A Hernandez

Credential MD

Sex Male

Practice address 1139 E Sonterra Blvd, Suite 405, San Antonio, TX, 78258

Phone (210) 404-0000

Fax (210) 404-2812

Enumeration date Sep 12, 2006

Last updated in NPPES Jan 16, 2018

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License K0489 (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
P01164916	Other	-	RAILROAD MEDICARE
038712803	Medicaid	TX	-
8DL471	Other	TX	BCBSTX
K0489	Other	TX	LICENSE 8K5160

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 specialty is Timothy Hernandez?

Timothy Hernandez is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-01-16.