Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Janessa Marie Simon, O.D.

Optometrist in Greenville, OH · enumerated 2009.

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

National Provider Identifier

1053644575

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Registry record

Entity type Individual (Type 1)

Name Dr. Janessa Marie Simon

Credential O.D.

Sex Female

Practice address 5735 Meeker Rd, Greenville, OH, 45331

Phone (937) 548-3806

Fax (937) 548-3552

Enumeration date Sep 16, 2009

Last updated in NPPES Jul 21, 2022

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5889 (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
3031249	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 Janessa Simon?

Janessa Simon 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 2022-07-21.