Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Tamara Joy Holloway, DO

Internal Medicine Physician in Oklahoma City, OK · enumerated 2005.

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

National Provider Identifier

1790760817

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Registry record

Entity type Individual (Type 1)

Name Dr. Tamara Joy Holloway

Credential DO

Sex Female

Practice address 1000 N Lee Ave, Room 4404, Oklahoma City, OK, 73102

Phone (405) 272-6406

Fax (405) 272-6075

Enumeration date Dec 12, 2005

Last updated in NPPES Aug 6, 2013

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 3958 (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
200043990A	Medicaid	OK	-
P00151817	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1790760817 active?

Yes, as of the latest NPPES snapshot, NPI 1790760817 is active (record last updated 2013-08-06).

How do I verify Tamara Holloway's NPI record?

Cross-check NPI 1790760817 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 2013-08-06.