Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Peter John Koshar Jr., LMSW

Individual provider Mental Health Counselor · NPI 1912396516

Peter John Koshar Jr., LMSW is a Clinical Social Worker in Hartford, Michigan. Graduated from Western Michigan Un Homer Stryker School of Med in 2016, 10 years ago. Practices with Van Buren Community Mental Health Authority, a 22-clinician group, works from 2 locations and accepts Medicare assignment.

Years since qualifying
10
Trained at
Western Michigan Un Homer Stryker School of Med
In the registry since
2015
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

See every abbreviation used in this directory →

Practice location Address checks out

57418 County Road 681
Hartford, MI 49057-9421
Phone: (269) 657-5574
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1122 Austin, Cassopolis, MI 49031-8310 — (269) 228-5152

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X

Record details

NPI number1912396516
Entity typeIndividual (Type 1)
GenderMale
Credentials LMSW
Sole proprietorYes
NPI enumeratedJanuary 20, 2015
Last updated in NPPESOctober 16, 2023
Certification dateOctober 16, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolWESTERN MICHIGAN UN HOMER STRYKER SCHOOL OF MED
Graduated 2016 (10 years in practice)
Group practice Van Buren Community Mental Health Authority — 22 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount