IndividualActive
Benjamin Marmorstein, LMSW
NPI 1740805761 · Social Worker · Brooklyn, NY
Benjamin Marmorstein, LMSW is a Social Worker provider in Brooklyn, NY (NPI 1740805761).
Provider details
- NPI number
- 1740805761
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 109199 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(64/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
6 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
2020 Coney Island Ave
Brooklyn, NY 11223-2329
Phone: (718) 676-4280
Street-level locationGet directions
Mailing address
1359 E 29th St
Brooklyn, NY 11210-5314
Registry dates
- Enumerated
- 2020-06-15
- Last updated
- 2020-06-15
- Certified
- 2020-06-15
Frequently asked questions
- What is Benjamin Marmorstein's NPI number?
- Benjamin Marmorstein's National Provider Identifier (NPI) is 1740805761, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Benjamin Marmorstein's specialty?
- Benjamin Marmorstein is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Benjamin Marmorstein located?
- Benjamin Marmorstein's practice location on file with NPPES is 2020 Coney Island Ave, Brooklyn, NY 11223-2329.
- What is Benjamin Marmorstein's phone number?
- The practice phone number listed in the NPPES registry for Benjamin Marmorstein is (718) 676-4280.
- Is Benjamin Marmorstein's NPI active?
- Yes — Benjamin Marmorstein's NPI (1740805761) is active in the NPPES registry as of the last update on 2020-06-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.