Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Todd Mathew Clark, O.D.

Optometrist in Westerville, OH · enumerated 2007 · practices at Scott W Nieman DDS Inc.

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

National Provider Identifier

1831214196

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Registry record

Entity type Individual (Type 1)

Name Dr. Todd Mathew Clark

Credential O.D.

Sex Male

Practice address 395 N West St, Suite B, Westerville, OH, 43082

Phone (614) 839-2733

Fax (614) 839-5367

Enumeration date Mar 19, 2007

Last updated in NPPES Dec 7, 2011

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4992 (OH) Primary

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
1309550001	Other	OH	NATIONAL GOVERNMENT SERVICES - DMERC

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 Todd Clark's NPI record?

Cross-check NPI 1831214196 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1831214196 active?

Yes, as of the latest NPPES snapshot, NPI 1831214196 is active (record last updated 2011-12-07).

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Emily Baran Pediatric Dentistry · Westerville, OH NPI 1477649069 Scott W Nieman DDS Inc Pediatric Dentistry · Westerville, OH NPI 1891885596

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-07.