IndividualActive
Alexander Grinberg
NPI 1689550220 · Social Worker · Brooklyn, NY
Alexander Grinberg is a Social Worker provider in Brooklyn, NY (NPI 1689550220).
Provider details
- NPI number
- 1689550220
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Basic profile(48/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in registry
- Profile completeness38% of score
83% 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
365 Willoughby Ave
Brooklyn, NY 11205-5191
Phone: (201) 914-5599
Street-level locationGet directions
Mailing address
902 Ocean Pkwy Apt 3e
Brooklyn, NY 11230-3424
Registry dates
- Enumerated
- 2025-08-11
- Last updated
- 2025-08-11
- Certified
- 2025-08-11
Frequently asked questions
- What is Alexander Grinberg's NPI number?
- Alexander Grinberg's National Provider Identifier (NPI) is 1689550220, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alexander Grinberg's specialty?
- Alexander Grinberg is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Alexander Grinberg located?
- Alexander Grinberg's practice location on file with NPPES is 365 Willoughby Ave, Brooklyn, NY 11205-5191.
- What is Alexander Grinberg's phone number?
- The practice phone number listed in the NPPES registry for Alexander Grinberg is (201) 914-5599.
- Is Alexander Grinberg's NPI active?
- Yes — Alexander Grinberg's NPI (1689550220) is active in the NPPES registry as of the last update on 2025-08-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.