Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Herbert Roscoe Littleton, DO

Internal Medicine Physician in Tahlequah, OK · enumerated 2006.

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

National Provider Identifier

1376588145

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Registry record

Entity type Individual (Type 1)

Name Mr. Herbert Roscoe Littleton

Credential DO

Sex Male

Practice address 1500 E Downing St, Ste 103, Tahlequah, OK, 74464

Phone (918) 456-0001

Fax (918) 456-6383

Enumeration date Jun 17, 2006

Last updated in NPPES Mar 15, 2010

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 1756 (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
060020996	Other	-	RAILROAD MEDICARE
100734730A	Medicaid	OK	-
731117836001	Other	-	BCBS
100144940A	Medicaid	OK	-

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 1376588145 active?

Yes, as of the latest NPPES snapshot, NPI 1376588145 is active (record last updated 2010-03-15).

How do I verify Herbert Littleton's NPI record?

Cross-check NPI 1376588145 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 2010-03-15.