Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Donald Erik Aspenson, M.D.

Endocrinology, Diabetes & Metabolism Physician in Tulsa, OK · enumerated 2006.

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

National Provider Identifier

1225008550

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Registry record

Entity type Individual (Type 1)

Name Donald Erik Aspenson

Credential M.D.

Sex Male

Practice address 8921 S Mingo Rd, Tulsa, OK, 74133

Phone (888) 397-8387

Enumeration date Jan 26, 2006

Last updated in NPPES Sep 30, 2025

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 23817 (OK) Primary

174400000X Specialist Other Service Providers · License 23817 (OK) Secondary

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
200030770A	Medicaid	OK	-
OK700122	Other	OK	MEDICARE PTAN
P00642510	Other	OK	MEDICARE RAILROAD
P00139985	Other	OK	MEDICARE RAILROAD

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

How do I verify Donald Aspenson's NPI record?

Cross-check NPI 1225008550 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1225008550 active?

Yes, as of the latest NPPES snapshot, NPI 1225008550 is active (record last updated 2025-09-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-30.