Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Mark P Williams, O.D.

Low Vision Rehabilitation Optometrist in Burton, MI · enumerated 2007 · practices at Ross H Williams Od, PC.

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

National Provider Identifier

1518015759

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark P Williams

Credential O.D.

Sex Male

Practice address Burton, MI, 48509

Phone (810) 715-2020

Fax (810) 715-2021

Enumeration date Jan 6, 2007

Last updated in NPPES Jul 8, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

152WL0500X Low Vision Rehabilitation Optometrist Eye and Vision Services Providers · License 4901002607 (MI) Primary

152W00000X Optometrist Eye and Vision Services Providers · License 4901002607 (MI) Secondary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier	Type	State	Issuer
202115	Other	MI	MCLAREN PROVIDER NUMBER
900B56586	Other	MI	BCBS PROVIDER NUMBER
945104868	Medicaid	MI	-
382219845	Other	MI	ALL OTHER INS

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

Where does Mark Williams practice?

The practice location on file with NPPES is in Burton, MI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Mark Williams?

The National Provider Identifier (NPI) for Mark Williams is 1518015759, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Ross Williams Optometrist · Burton, MI NPI 1265482632 Ross H Williams Od, PC Optometrist · Burton, MI NPI 1417054891

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-08.