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

Dr. Thomas B. Leahey, D.O.

Rheumatology Physician in Ardmore, OK · enumerated 2006.

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

National Provider Identifier

1891886545

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas B. Leahey

Credential D.O.

Sex Male

Practice address Ardmore, OK, 73401

Phone (580) 226-2202

Fax (580) 307-6790

Enumeration date Sep 27, 2006

Last updated in NPPES Oct 21, 2021

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

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 2708 (OK) 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
73149603000	Other	OK	HEALTHCHOICE
110179812	Other	OK	RAILROAD MEDICARE
731496030002	Other	OK	BCBS OF OK PROVIDER #
110179812	Other	OK	PREFERRED COMMUNITY CHOIC
731496030	Other	OK	CHAMPUS/TRICARE

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 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.

What specialty is Thomas Leahey?

Thomas Leahey is registered in NPPES with the primary taxonomy of Rheumatology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-21.