Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John R Gwin, OD

Optometrist in Columbus, OH · enumerated 2006.

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

National Provider Identifier

1568542173

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Registry record

Entity type Individual (Type 1)

Name John R Gwin

Credential OD

Sex Male

Practice address 5180 E Main St, Suite F, Columbus, OH, 43213

Phone (614) 866-9002

Fax (614) 866-3581

Enumeration date Oct 17, 2006

Last updated in NPPES Jan 30, 2014

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5311-T2220 (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
2373828	Medicaid	OH	-

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is John Gwin?

John Gwin is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-01-30.