Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Hanlon, OD

Optometrist in Rock Falls, IL · enumerated 2019 · practices at James F. Krenz, O.D. P.C..

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

National Provider Identifier

1366097511

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Registry record

Entity type Individual (Type 1)

Name John Hanlon

Credential OD

Sex Male

Practice address 102 W Rock Falls Rd, Rock Falls, IL, 61071

Phone (815) 626-7700

Fax (815) 235-6180

Enumeration date Aug 5, 2019

Last updated in NPPES Aug 5, 2019

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 046011346 (IL) 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 1366097511 active?

Yes, as of the latest NPPES snapshot, NPI 1366097511 is active (record last updated 2019-08-05).

How do I verify John Hanlon's NPI record?

Cross-check NPI 1366097511 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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James Krenz Optometrist · Rock Falls, IL NPI 1902864523 James F. Krenz, O.D. P.C. Optometrist · Rock Falls, IL NPI 1144241035

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-08-05.