Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Mark Richard Williams, DPM

Foot & Ankle Surgery Podiatrist in Davison, MI · enumerated 2006.

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

National Provider Identifier

1669575478

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Registry record

Entity type Individual (Type 1)

Name Mr. Mark Richard Williams

Credential DPM

Sex Male

Practice address 605 S State St, Davison, MI, 48423

Phone (810) 653-9060

Fax (810) 658-2248

Enumeration date Sep 7, 2006

Last updated in NPPES Jun 28, 2013

Taxonomy & licenses

213ES0103X Foot & Ankle Surgery Podiatrist Podiatric Medicine & Surgery Service Providers · License MW001983 (MI) Primary

DPM · Doctor of Podiatric Medicine: A physician specializing in medical and surgical care of the foot and ankle. About the DPM credential

Other identifiers

Identifier	Type	State	Issuer
4632598	Medicaid	MI	-

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

How do I verify Mark Williams's NPI record?

Cross-check NPI 1669575478 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669575478 active?

Yes, as of the latest NPPES snapshot, NPI 1669575478 is active (record last updated 2013-06-28).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-06-28.