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MARGARET Y MATTHEWS LCSW
NPI 1811666340
Social Worker - Clinical in Portland, ME

Active since September 08, 2021PECOS EnrolledAccepts Medicare Assignment
901 WASHINGTON AVE STE 100, PORTLAND, ME 04103(207) 871-1200(207) 871-1232 Get Directions Write a Review

NPPES record last updated: January 20, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 20, 2026, Mar 7, 2024, Sep 8, 2021 (3 updates tracked since 2021).

About Margaret Y Matthews Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARGARET Y MATTHEWS LCSW (NPI 1811666340) is an individual clinical provider in Portland, Maine, licensed in Maine (LC23146) and active in the NPI registry since September 2021. She is enrolled in Medicare PECOS, is affiliated with Mid Coast Hospital, and maintains a secondary practice location in Brunswick.

NPPES Registry Identity

NPI1811666340
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMARGARET Y MATTHEWSCredential: LCSW
Location Address901 WASHINGTON AVE STE 100Portland, ME 04103-2842
Mailing Address901 Washington Ave Ste 100Portland, ME 04103-2842 · (207) 871-1200 · Fax (207) 871-1232
Phone(207) 871-1200
Fax(207) 871-1232
Sole ProprietorNo
Medical School CMSBoston University School Of MedicineGraduated 2021
Enumeration DateSeptember 8, 2021
Last NPPES UpdateJanuary 20, 20263 updates tracked since enumeration
NPPES CertifiedJanuary 20, 2026
✔ NPI 1811666340 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in ME · LC23146
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
901 WASHINGTON AVE STE 100, Portland, ME 04103
Open in Google Maps ↗

Secondary Practice Location 1

Location 122 Station Ave Ste 101Brunswick, ME 04011-2092 · Phone (207) 373-6848 · Fax (207) 618-5680

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Harvard Pilgrim Health Care.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Margaret Y Matthews Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638518988
PECOS Enrollment IDI20240418003293
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Mid Coast Hospital

Acute Care Hospitals · Brunswick, ME
2/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number200021
Location123 Medical Center DriveBrunswick, ME 04011 · Cumberland County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $56.28 – $169.96
Typical copayment $0.00 (range $14.07 – $42.49)
Most-billed visit code NA
Established Patient
$70.13 typical visit price
range $18.22 – $138.92
Typical copayment $17.53 (range $4.55 – $34.73)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

RANI WILSON LCPC-CC
Counselor (Mental Health)
901 WASHINGTON AVE STE 100
PORTLAND, ME 04103
Cumberland County (207) 871-1200
JOSEPH BOUTIN OT
Occupational Therapist
901 WASHINGTON AVE STE 100
PORTLAND, ME 04103
Cumberland County (207) 871-1200
SARA A GLEASON
Social Worker (Clinical)
901 WASHINGTON AVE STE 100
PORTLAND, ME 04103
Cumberland County (207) 871-1200
CHELSEA M WHITE LMSW-CC
Social Worker (Clinical)
901 WASHINGTON AVE STE 100
PORTLAND, ME 04103
Cumberland County (207) 871-1200
ALEXIS A RICE
Social Worker (Clinical)
901 WASHINGTON AVE STE 100
PORTLAND, ME 04103
Cumberland County (207) 871-1200
ANDREW CURTIS PEAKE LMSW-CC
Social Worker (Clinical)
901 WASHINGTON AVE STE 100
PORTLAND, ME 04103
Cumberland County (207) 871-1200
ALLI WINKELMAN LMSW-CC
Social Worker (Clinical)
901 WASHINGTON AVE STE 100
PORTLAND, ME 04103
Cumberland County (120) 787-1120
TYLER WALLACE LMSW-CC
Social Worker (Clinical)
901 WASHINGTON AVE STE 100
PORTLAND, ME 04103
Cumberland County (207) 871-1200

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Margaret Matthews's NPI number?

The NPI number for Margaret Matthews is 1811666340. It was assigned to this individual provider in the NPPES registry on September 8, 2021.

Where is Margaret Matthews located?

Margaret Matthews practices at 901 Washington Ave Ste 100, Portland, ME 04103. The listed phone number is (207) 871-1200.

What is Margaret Matthews's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Margaret Matthews enrolled in Medicare?

Yes. Margaret Matthews is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Margaret Matthews accept?

Health plans from Harvard Pilgrim Health Care list Margaret Matthews as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Margaret Matthews affiliated with any hospitals?

According to CMS data, Margaret Matthews is affiliated with Mid Coast Hospital.

When was this NPI record last updated?

The NPPES record for Margaret Matthews was last updated on January 20, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.