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

Margaret Y Matthews, LCSW

Individual provider Clinical Social Worker · NPI 1811666340

Margaret Y Matthews, LCSW is a Clinical Social Worker in Portland, Maine. Graduated from Boston University School of Medicine in 2021, 5 years ago. Practices with Mainehealth, a 2,615-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maine.

Years since qualifying
5
Trained at
Boston University School of Medicine
Licensed in
ME
In the registry since
2021
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

901 Washington Ave Ste 100
Portland, ME 04103-2842
Phone: (207) 871-1200
Fax: (207) 871-1232
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 22 Station Ave Ste 101, Brunswick, ME 04011-2092 — (207) 373-6848

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence LC23146 (ME)

Record details

NPI number1811666340
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedSeptember 8, 2021
Last updated in NPPESJanuary 20, 2026
Certification dateJanuary 20, 2026

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolBOSTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2021 (5 years in practice)
Group practice Mainehealth — 2615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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