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

Individual provider Clinical Social Worker · NPI 1639311202

Gwendolyn Williamson, LMSW is a Clinical Social Worker in Portage, Michigan. Graduated from Wayne State University School of Medicine in 1999, 27 years ago. Practices as a sole proprietor, works from 2 locations and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
27
Trained at
Wayne State University School of Medicine
Licensed in
MI
In the registry since
2009
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

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Practice location Address checks out

1125 E Milham Ave Ste B
Portage, MI 49002-3096
Phone: (269) 312-1446
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4337 E Grand River Ave, Howell, MI 48843-6583 — (248) 379-6975

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 6801079449 (MI)

Record details

NPI number1639311202
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMSW
Sole proprietorYes
NPI enumeratedMarch 29, 2009
Last updated in NPPESMay 29, 2020
Certification dateMay 29, 2020

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolWAYNE STATE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1999 (27 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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