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

Mr. Brian O. Mason, LCSW, LMSW

Individual provider Clinical Social Worker · NPI 1295920296

Mr. Brian O. Mason, LCSW, LMSW is a Clinical Social Worker in Onsted, Michigan. Qualified in 1994, 32 years ago. Practices with Richard Kneip PHD PC, a 243-clinician group and accepts Medicare assignment. Licensed in Illinois and Michigan.

Years since qualifying
32
Licensed in
IL, MI
In the registry since
2007
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.
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

214 Pentecost Hwy
Onsted, MI 49265-9638
Phone: (815) 245-6834
Show map & directions

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

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 149007751 (IL)
Clinical Social Worker Taxonomy 1041C0700X · Licence 6801119163 (MI)

Record details

NPI number1295920296
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW , LMSW
Sole proprietorYes
NPI enumeratedSeptember 12, 2007
Last updated in NPPESJune 10, 2025
Certification dateJune 10, 2025

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1994 (32 years in practice)
Group practice Richard Kneip Phd Pc — 243 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Onsted