Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas C. Williams, M.D.

Anesthesiology Physician in Russellville, AR · enumerated 2005.

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

National Provider Identifier

1790786408

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas C. Williams

Credential M.D.

Sex Male

Practice address 1808 W Main St, Russellville, AR, 72801

Phone (479) 968-2841

Enumeration date Aug 3, 2005

Last updated in NPPES Jun 3, 2008

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License C7989 (AR) 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
050031807	Other	-	RR MEDICARE GROUP CC5970
770078201	Other	AR	AR BREASTCARE
125265001	Medicaid	AR	-
5J371	Other	AR	BLUE CROSS BLUE SHIELD AR

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

What is the NPI number for Thomas Williams?

The National Provider Identifier (NPI) for Thomas Williams is 1790786408, a Type 1 (individual) record in the CMS NPPES registry.

Where does Thomas Williams practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-03.