Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Diego Sebastian Humphrey, MD

Cardiovascular Disease Physician in Tahlequah, OK · enumerated 2006 · practices at Tahlequah Internal Medicine Inc.

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

National Provider Identifier

1073525515

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Registry record

Entity type Individual (Type 1)

Name Dr. Diego Sebastian Humphrey

Credential MD

Sex Male

Practice address 1500 E. Downing #, Tahlequah, OK, 74464

Phone (918) 207-0882

Fax (918) 207-0335

Enumeration date Aug 13, 2006

Last updated in NPPES Apr 8, 2020

Taxonomy & licenses

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 19979 (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
100037340A	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 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 Diego Humphrey?

Diego Humphrey is registered in NPPES with the primary taxonomy of Cardiovascular Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-04-08.