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MS. MARLEY ALEXANDRA SEPINUCK MSW, LCSW
NPI 1225877921
Social Worker in Boston, MA

Active since May 22, 2024
4238 WASHINGTON ST, BOSTON, MA 02131(508) 733-6319 Get Directions Write a Review

NPPES record last updated: April 27, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Apr 27, 2026, Jul 4, 2024 (2 updates tracked since 2024).

About Ms. Marley Alexandra Sepinuck Msw, Lcsw NPPES

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

MS. MARLEY ALEXANDRA SEPINUCK MSW, LCSW (NPI 1225877921) is an individual social worker in Boston, Massachusetts, licensed in Massachusetts (230707) and active in the NPI registry since May 2024.

NPPES Registry Identity

NPI1225877921
Entity TypeIndividualFemale
Primary Taxonomy104100000X
Provider Legal NameMS. MARLEY ALEXANDRA SEPINUCKCredential: MSW, LCSW
Location Address4238 WASHINGTON STBoston, MA 02131-2558
Mailing Address1180 Beacon St Ste 7dBrookline, MA 02446-3806
Phone(508) 733-6319
Sole ProprietorNo
Enumeration DateMay 22, 2024
Last NPPES UpdateApril 27, 20262 updates tracked since enumeration
NPPES CertifiedApril 27, 2026
✔ NPI 1225877921 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers
Taxonomy Code104100000X
License✔ Licensed in MA · 230707
Definition
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
4238 WASHINGTON ST, Boston, MA 02131
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Other Providers at the Same Location NPPES 6

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

MS. TARA VENKATRAMAN LCSW
Social Worker (Clinical)
4238 WASHINGTON ST
BOSTON, MA 02131
Suffolk County (857) 273-2123
NICOLE SOFFER LICSW
Social Worker (Clinical)
4238 WASHINGTON ST, SUITE 316
ROSLINDALE, MA 02131
Suffolk County (857) 273-2125
CATHERINE MCGEOUGH LCSW
Social Worker
4238 WASHINGTON ST
BOSTON, MA 02131
Suffolk County (857) 273-2123
ELIZABETH LOVELESS LMHC
Counselor (Mental Health)
4238 WASHINGTON ST, #316
ROSLINDALE, MA 02131
Suffolk County (857) 273-2123
DR. CRYSTIMARIA KOTSIOPOULOS PSYD
Psychologist (Clinical)
4238 WASHINGTON ST
ROSLINDALE, MA 02131
Suffolk County (781) 790-4497
ALIAKBAR ESMAEILI DDS LLC
Dentist (General Practice)
4238 WASHINGTON ST, UNIT C
ROSLINDALE, MA 02131
Suffolk County (917) 767-3860

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 Marley Sepinuck's NPI number?

The NPI number for Marley Sepinuck is 1225877921. It was assigned to this individual provider in the NPPES registry on May 22, 2024.

Where is Marley Sepinuck located?

Marley Sepinuck practices at 4238 Washington St, Boston, MA 02131. The listed phone number is (508) 733-6319.

What is Marley Sepinuck's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

When was this NPI record last updated?

The NPPES record for Marley Sepinuck was last updated on April 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.