Provider Profile
John Koslosky
Unclaimed ProfileAbout John Koslosky
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Education & Training
Specialty
Credentials & Licensing
Source: NPPES NPI Registry
Contact Information
- (847) 381-0388
- Email not available
Practice Locations
27401 W HIGHWAY 22 STE 125
Barrington, IL 60010
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other physician assistants at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 22 related providers in 3 groups
Other physician assistants in Barrington 6
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2025 at Other 8
Providers who graduated from the same medical school in the same year.
Common questions
What kind of doctor is John Koslosky?
John Koslosky is a physician assistant in Barrington, IL. That is the designation recorded for this NPI in the federal registry.
NPI registry
What is John Koslosky's address?
John Koslosky is listed at 27401 W Highway 22 Ste 125, Barrington, IL 60010. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with John Koslosky?
The number on file is (847) 381-0388. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is John Koslosky's NPI number?
John Koslosky's National Provider Identifier is 1932895364. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did John Koslosky train?
John Koslosky attended Other, graduating in 2025. This comes from the CMS National Downloadable File.
CMS public data
How long has John Koslosky been practicing?
John Koslosky has 1 year experience. Calculated from a graduation year of 2025, reported in the CMS National Downloadable File.
CMS public data
Has John Koslosky confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by John Koslosky. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.