NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Thomas Julian Gianaris, M.D.

Neurological Surgery Physician in Tyler, TX · enumerated 2013.

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

National Provider Identifier

1629417829

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Registry record

Entity type Individual (Type 1)
Name Dr. Thomas Julian Gianaris
Credential M.D.
Sex Male
Practice address Tyler, TX, 75701
Phone (903) 595-2441
Fax (903) 595-0743
Enumeration date Jun 20, 2013
Last updated in NPPES Oct 22, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License S7218 (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
S7218 Other TX TMB

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

Is NPI 1629417829 active?
Yes, as of the latest NPPES snapshot, NPI 1629417829 is active (record last updated 2024-10-22).
How do I verify Thomas Gianaris's NPI record?
Cross-check NPI 1629417829 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-22.