Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas N. Zanetos, D.O.

Specialist in Hollister, CA · enumerated 2006.

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

National Provider Identifier

1285676312

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Registry record

Entity type Individual (Type 1)

Name Thomas N. Zanetos

Credential D.O.

Sex Male

Practice address 911 Sunset Dr, Hollister, CA, 95023

Phone (831) 637-5711

Fax (831) 636-2685

Enumeration date Jun 12, 2006

Last updated in NPPES Jul 9, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 20A5351 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
00AX53510	Medicaid	CA	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Thomas Zanetos?

The National Provider Identifier (NPI) for Thomas Zanetos is 1285676312, a Type 1 (individual) record in the CMS NPPES registry.

Where does Thomas Zanetos practice?

The practice location on file with NPPES is in Hollister, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-09.