Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Malcolm Edward Williamson, DO

Endocrinology, Diabetes & Metabolism Physician in Grosse Ile, MI · enumerated 2006.

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

National Provider Identifier

1750446217

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Registry record

Entity type Individual (Type 1)

Name Dr. Malcolm Edward Williamson

Credential DO

Sex Male

Practice address 8432 Thorntree Drive, Grosse Ile, MI, 48138

Phone (734) 675-3319

Fax (734) 692-5061

Enumeration date Dec 26, 2006

Last updated in NPPES Dec 31, 2007

Taxonomy & licenses

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 5101005793 (MI) Primary

207U00000X Nuclear Medicine Physician Allopathic & Osteopathic Physicians · License 5101005793 (MI) Secondary

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
1296713	Medicaid	MI	-
5823063	Other	MI	BCBS

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 1750446217 active?

Yes, as of the latest NPPES snapshot, NPI 1750446217 is active (record last updated 2007-12-31).

How do I verify Malcolm Williamson's NPI record?

Cross-check NPI 1750446217 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-31.