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

Dr. Thomas Crawford Alexander, M.D.

Internal Medicine Physician in Okmulgee, OK · enumerated 2006.

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

National Provider Identifier

1366559973

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Crawford Alexander

Credential M.D.

Sex Male

Practice address Okmulgee, OK, 74447

Phone (918) 756-5471

Fax (918) 756-5498

Enumeration date Aug 23, 2006

Last updated in NPPES Jun 23, 2008

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 8128 (OK) 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
50657	Other	OK	BLUE LINCS PROVIDER
0060321	Other	OK	UNITED MINE WORKERS
100109390A	Medicaid	OK	-
112859759	Other	OK	RAILROAD MEDICARE

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 1366559973 active?

Yes, as of the latest NPPES snapshot, NPI 1366559973 is active (record last updated 2008-06-23).

How do I verify Thomas Alexander's NPI record?

Cross-check NPI 1366559973 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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Thomas C. Alexander, M.D., Inc. Internal Medicine Physician · Okmulgee, OK NPI 1295841963 1 Case Management Agency · Okmulgee, OK NPI 1992663637

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-23.