John Koslosky
Physician Assistant • Barrington, IL
Professional Overview & Biography Verified Profile Summary
John Koslosky is a certified Physician Assistant practicing in Barrington, IL. With approximately 1 years of clinical experience since completing medical education in 2025, John Koslosky delivers high-quality medical care to the local community at 27401 W HIGHWAY 22 STE 125.
John Koslosky is affiliated with Illinois Bone And Joint Institute, Llc and accepts Medicare assignment.
Practice Location & Contact Primary Location
27401 W Highway 22 Ste 125
Barrington, IL 600105934
Medicare Profile & Education
Other
2025
✓ Accepts Assignment
In-Person Only
Specialty Benchmarks & Practice Insights
Comparative analytics for Physician Assistant in Barrington, IL
Practicing in Barrington, IL (4958 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Clinical Seniority & Experience Comparison
Medical Specialties & State Licenses
CMS Verified: 2025-05-21NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Hospital & Practice Group Affiliations
Illinois Bone And Joint Institute, Llc
2101 Waukegan Rd, Bannockburn, IL 600151836
Illinois Bone And Joint Institute, Llc
815 Cog Cir, Crystal Lake, IL 600147302
Phone: 8473810388
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Physician Assistant
Orthopaedic Surgery - Hand Surgery
Doctor of Medicine (M.D.)
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Specialist/Technologist, Other - Surgical Technologist
Orthopaedic Surgery
Doctor of Medicine (M.D.)
Specialist/Technologist, Other - Surgical Technologist
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Registered at 27401 W HIGHWAY 22 STE 125, BARRINGTON, IL 600105934 (Tel: 8473810388)
Registered at 900 RAND RD STE 300, DES PLAINES, IL 600162359 (Tel: 8473243976)
Physician Assistant
NPI status registered as active in NPPES database
Registered at 171 AMBER CT, WEST CHICAGO, IL 601855108 (Tel: 6304412099)
Registered at 171 AMBER CT, WEST CHICAGO, IL 601855108 (Tel: 6304412099)
Recorded as JOHN KOSLOSKY
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
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NPI Administrative Meta
Mailing Address
900 Rand Rd Ste 300
Des Plaines, IL 600162359
Phone: 8473243976
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.