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

Timothy Diaz, DO

Surgery Physician in Terre Haute, IN · enumerated 2019.

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

National Provider Identifier

1144885286

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Registry record

Entity type Individual (Type 1)

Name Timothy Diaz

Credential DO

Sex Male

Practice address Terre Haute, IN, 47804

Phone (812) 232-1123

Enumeration date May 3, 2019

Last updated in NPPES Jun 18, 2024

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

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 02007735A (IN) 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

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

How do I verify Timothy Diaz's NPI record?

Cross-check NPI 1144885286 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1144885286 active?

Yes, as of the latest NPPES snapshot, NPI 1144885286 is active (record last updated 2024-06-18).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-18.