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John Koslosky II

Physician Assistant in Barrington, IL · enumerated 2023.

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

National Provider Identifier

1932895364

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Registry record

Entity type Individual (Type 1)
Name John Koslosky II
Sex Male
Practice address 27401 W Highway 22 Ste 125, Barrington, IL, 60010
Phone (847) 381-0388
Fax (847) 381-0811
Enumeration date Apr 18, 2023
Last updated in NPPES May 21, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers 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.

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Frequently asked questions

How do I verify John Koslosky's NPI record?
Cross-check NPI 1932895364 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1932895364 active?
Yes, as of the latest NPPES snapshot, NPI 1932895364 is active (record last updated 2025-05-21).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-21.