Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Caleb Paul Mergener, OD

Optometrist in Fort Campbell, KY · enumerated 2022.

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

National Provider Identifier

1528797511

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Registry record

Entity type Individual (Type 1)

Name Dr. Caleb Paul Mergener

Credential OD

Sex Male

Practice address 650 Joel Dr, Fort Campbell, KY, 42223

Phone (269) 547-9582

Enumeration date Jun 6, 2022

Last updated in NPPES Jun 13, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4901005619 (MI) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 3778 (TN) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

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

Is NPI 1528797511 active?

Yes, as of the latest NPPES snapshot, NPI 1528797511 is active (record last updated 2023-06-13).

How do I verify Caleb Mergener's NPI record?

Cross-check NPI 1528797511 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-13.