Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Eric Vandemark, O.D.

Optometrist in Findlay, OH · enumerated 2005 · practices at Horizon Eye Care LLC.

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

National Provider Identifier

1245221423

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Registry record

Entity type Individual (Type 1)

Name Dr. John Eric Vandemark

Credential O.D.

Sex Male

Practice address 1318 N Main St, Findlay, OH, 45840

Phone (419) 452-4378

Fax (419) 425-4377

Enumeration date Nov 4, 2005

Last updated in NPPES Mar 9, 2009

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 2925 T688 (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
1104098920	Other	OH	BUSINESS NPI

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

Where does John Vandemark practice?

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

What is the NPI number for John Vandemark?

The National Provider Identifier (NPI) for John Vandemark is 1245221423, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Horizon Eye Care LLC Optometrist · Findlay, OH NPI 1104098920

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-03-09.