IndividualActive
Marley Sepinuck, MSW, LCSW
NPI 1225877921 · Social Worker · Boston, MA
Marley Sepinuck, MSW, LCSW is a Social Worker provider in Boston, MA (NPI 1225877921).
Provider details
- NPI number
- 1225877921
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 230707 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(56/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
4238 Washington St
Boston, MA 02131-2558
Phone: (508) 733-6319
Street-level locationGet directions
Mailing address
1180 Beacon St Ste 7d
Brookline, MA 02446-3806
Registry dates
- Enumerated
- 2024-05-22
- Last updated
- 2026-04-27
- Certified
- 2026-04-27
Frequently asked questions
- What is Marley Sepinuck's NPI number?
- Marley Sepinuck's National Provider Identifier (NPI) is 1225877921, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marley Sepinuck's specialty?
- Marley Sepinuck is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Marley Sepinuck located?
- Marley Sepinuck's practice location on file with NPPES is 4238 Washington St, Boston, MA 02131-2558.
- What is Marley Sepinuck's phone number?
- The practice phone number listed in the NPPES registry for Marley Sepinuck is (508) 733-6319.
- Is Marley Sepinuck's NPI active?
- Yes — Marley Sepinuck's NPI (1225877921) is active in the NPPES registry as of the last update on 2026-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.