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ANN STEWART MSW, LICSW
NPI 1346667409
Social Worker - Clinical in Boston, MA

Active since March 26, 2014Opted out of Medicare · through Nov 17, 2027
101 MERRIMAC ST, 250, BOSTON, MA 02114(617) 643-9334(617) 643-9715 Get Directions Write a Review

NPPES record last updated: March 26, 2014. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Ann Stewart Msw, Licsw NPPES

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

ANN STEWART MSW, LICSW (NPI 1346667409) is an individual clinical provider in Boston, Massachusetts, licensed in Massachusetts (117756) and active in the NPI registry since March 2014. She has opted out of Medicare through November 17, 2027 and is a graduate of Other (2011).

NPPES Registry Identity

NPI1346667409
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameANN STEWARTCredential: MSW, LICSW
Location Address101 MERRIMAC ST, 250Boston, MA 02114-4724
Mailing Address101 Merrimac St, 250Boston, MA 02114-4724 · (617) 643-9334 · Fax (617) 643-9715
Phone(617) 643-9334
Fax(617) 643-9715
Sole ProprietorYes
Medical School CMSOtherGraduated 2011
Enumeration DateMarch 26, 2014
✔ NPI 1346667409 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 MA · 117756
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.
101 MERRIMAC ST, Boston, MA 02114
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, 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

ⓘ

Opted out of Medicare

Ann Stewart Msw, Licsw has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from November 17, 2025 through November 17, 2027.

Opt-Out Effective DateNovember 17, 2025
Opt-Out In Effect ThroughNovember 17, 2027Opt-out affidavits renew automatically every two years unless cancelled

Other Providers at the Same Location NPPES 10

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

JOHN L. NILES MD, PLLC
Clinic/Center (Medical Specialty)
101 MERRIMAC ST, 1ST FLOOR
BOSTON, MA 02114
Suffolk County (617) 726-4132
LAUREN KRISTI RICHARDS PH.D.
Psychologist
101 MERRIMAC ST, SUITE 250
BOSTON, MA 02114
Suffolk County (617) 643-6481
DR. AARON R. HOFFMAN DO
Family Medicine
101 MERRIMAC ST, SUITE 1000
BOSTON, MA 02114
Suffolk County (617) 724-1100
DR. JOHN L NILES MD
Internal Medicine (Nephrology)
101 MERRIMAC ST, 1ST FLOOR
BOSTON, MA 02114
Suffolk County (617) 726-4132
DR. ELIZABETH BERNIER LAMONT MD
Internal Medicine (Medical Oncology)
101 MERRIMAC ST, M01 10
BOSTON, MA 02114
Suffolk County (617) 724-1817
DR. JESSICA MONIQUE HU M.D.
Internal Medicine
101 MERRIMAC ST, SUITE 1000
BOSTON, MA 02114
Suffolk County (617) 724-1100
LAURA HARWARD LICSW
Social Worker
101 MERRIMAC ST, SUITE 250
BOSTON, MA 02114
Suffolk County (617) 643-7804
MS. MARTHA LOUISE STEWART NP
Nurse Practitioner (Occupational Health)
101 MERRIMAC ST, RM. 420
BOSTON, MA 02114
Suffolk County (617) 726-6370

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 Ann Stewart's NPI number?

The NPI number for Ann Stewart is 1346667409. It was assigned to this individual provider in the NPPES registry on March 26, 2014.

Where is Ann Stewart located?

Ann Stewart practices at 101 Merrimac St 250, Boston, MA 02114. The listed phone number is (617) 643-9334.

What is Ann Stewart's specialty?

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

Is Ann Stewart enrolled in Medicare?

No. Ann Stewart has opted out of Medicare through November 17, 2027. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out.

What insurance does Ann Stewart accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Ann Stewart 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.

When was this NPI record last updated?

The NPPES record for Ann Stewart was last updated on March 26, 2014. NPI Profile syncs with the weekly NPPES data releases published by CMS.