Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Chester B. Kozak II, PA-C

Physician Assistant in Leavenworth, KS · enumerated 2006.

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

National Provider Identifier

1346203072

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Registry record

Entity type Individual (Type 1)

Name Mr. Chester B. Kozak II

Credential PA-C

Sex Male

Practice address 4101 S 4th St, Leavenworth, KS, 66048

Phone (913) 682-2000

Fax (913) 758-4185

Enumeration date Apr 12, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 00271 (KS) Primary

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

What is the NPI number for Chester Kozak?

The National Provider Identifier (NPI) for Chester Kozak is 1346203072, a Type 1 (individual) record in the CMS NPPES registry.

Where does Chester Kozak practice?

The practice location on file with NPPES is in Leavenworth, KS. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.