Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Preston G. Linley, O.D.

Optometrist in Sylvania, OH · enumerated 2007.

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

National Provider Identifier

1538379011

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Registry record

Entity type Individual (Type 1)

Name Dr. Preston G. Linley

Credential O.D.

Sex Male

Practice address 5700 Monroe St, Suite 211 Promedica Health and Wellness Center, Sylvania, OH, 43560

Phone (866) 935-5393

Fax (734) 243-3236

Enumeration date May 23, 2007

Last updated in NPPES Nov 3, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5688 (OH) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 4901004510 (MI) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License OPT5688THER (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
2759260	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 Preston Linley?

Preston Linley 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 2023-11-03.