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DR. LEON J. KOSEK O.D.
NPI 1801834080
Optometrist in Frankfort, IL

Active since June 02, 2006
21237 S LAGRANGE RD, FRANKFORT, IL 60423(815) 469-8541(815) 469-8126 Get Directions Write a Review

NPPES record last updated: July 6, 2011. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Leon J. Kosek O.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. LEON J. KOSEK O.D. (NPI 1801834080) is an individual optometrist in Frankfort, Illinois, licensed in Illinois (046007472) and active in the NPI registry since June 2006.

NPPES Registry Identity

NPI1801834080
Entity TypeIndividualMale
Primary Taxonomy152W00000X
Provider Legal NameDR. LEON J. KOSEKCredential: O.D.
Location Address21237 S LAGRANGE RDFrankfort, IL 60423-2046
Mailing Address21237 S Lagrange RdFrankfort, IL 60423-2046 · (815) 469-8541 · Fax (815) 469-8126
Phone(815) 469-8541
Fax(815) 469-8126
Sole ProprietorYes
Enumeration DateJune 2, 2006
Last NPPES UpdateJuly 6, 2011
✔ NPI 1801834080 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOptometristEye and Vision Services Providers
Taxonomy Code152W00000X
Licenses✔ Licensed in IL · 046007472✔ Licensed in IN · 18001974A
Definition
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.
21237 S LAGRANGE RD, Frankfort, IL 60423
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Other Identifiers 4

Medicare PIN948760IL
Medicaid100086900AIN
Medicare ID-Type Unspecified473060GGGGIN
Medicare NSC0218400001IL

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. JUDITH K WALSH O.D.
Optometrist
21237 S LAGRANGE RD
FRANKFORT, IL 60423
Will County (815) 469-8541
MEUS FAMILY VISION CARE LLC
Optometrist
21237 S LAGRANGE RD
FRANKFORT, IL 60423
Will County (815) 469-8541

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Leon Kosek's NPI number?

The NPI number for Leon Kosek is 1801834080. It was assigned to this individual provider in the NPPES registry on June 2, 2006.

Where is Leon Kosek located?

Leon Kosek practices at 21237 S Lagrange Rd, Frankfort, IL 60423. The listed phone number is (815) 469-8541.

What is Leon Kosek's specialty?

The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.

When was this NPI record last updated?

The NPPES record for Leon Kosek was last updated on July 6, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.