Margaret Y. Matthews, LCSW
Clinical Social Worker · Portland, ME
Margaret Y. Matthews, LCSW is a clinical social worker with a practice address in Portland, Maine, and NPI 1811666340, issued on Sep 8, 2021. Check the license (Maine LC23146, as entered in NPPES) with the Maine board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Margaret Y. Matthews
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- LC23146 ME
Self-reported in NPPES; status is on the state search - Practice location
- 901 Washington Ave Ste 100, Portland, ME 04103
- Phone
- (207) 871-1200
- Enumerated
- Sep 8, 2021
- Record last updated
- Jan 20, 2026
- Fax
- (207) 871-1232
- Medicare enrollment
- Enrolled (PECOS I20240418003293); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 2021
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 3,673 in Maine → Look up another NPI →
Also registered at 901 Washington Ave Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Keera Allen, LMSW-CCClinical Social Worker1659090629
- Meredith Backus, LMSW-CCClinical Social Worker1780363986
- Laura Baer, LCPCProfessional Counselor1215166590
- Adele Baruch, LCPCProfessional Counselor1184498446
- Chloe Beattie, LMSW-CCClinical Social Worker1497589196
- Jennifer Beaule, M.S. ED.Professional Counselor1780985101
Verify Margaret Y. Matthews in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maine board licenses this profession
Search for license LC23146Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- MainehealthPortland, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Y. Matthews among 3,673 clinical social worker records in Maine
Margaret Y. Matthews, LCSW is one of 3,673 clinical social worker records with a practice address in Maine. 19% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 82% of them.
- NPI issued2021 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 19% of these records are
- In the CMS Doctors and Clinicians fileYes · 26% of these records are
- Graduated2021 · median 2008 among the 939 with a school on file
- Record last updated2026 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
669 clinical social worker records list a practice address in Portland
They are 669 of the 6,022 NPPES records with a practice address in Portland, and 3,673 clinical social worker records in Maine.
All 3,673 in Maine → Every provider in Portland → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Sharon Ash Tancredi, LCSWPortland, ME 041031487671137
- Nancy Bills, LCSWPortland, ME 041031811921828
- Priscilla Bird, LCSWPortland, ME 041031669409496
- Maryann Carroll, LCSWPortland, ME 041031992712103
- Paula Curran, LCSWPortland, ME 041031184661308
- Kelli Fox, LCSW LADC CCSPortland, ME 041031952369688
- Jennifer Goodwin, LCSWPortland, ME 041031245242965
- Jennifer Greaves, L.C.S.W., L.A.D.C.Portland, ME 041031902865397
Common questions
What is Margaret Y. Matthews, LCSW's NPI number?
Margaret Y. Matthews, LCSW's National Provider Identifier (NPI) is 1811666340, issued on Sep 8, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Y. Matthews, LCSW located?
The NPPES record lists a practice address at 901 Washington Ave Ste 100, Portland, ME, 04103. Phone: (207) 871-1200. Providers update this record themselves, so call before visiting.
How can I verify Margaret Y. Matthews, LCSW's license?
NPPES lists Maine license number LC23146, as entered by the provider. Search the Maine board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.