Nathan Greenfeld
NPI 1073986964 · Social Worker · Brooklyn, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nathan Greenfeld is a Social Worker provider in Brooklyn, NY (NPI 1073986964).
Provider details
- NPI number
- 1073986964
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Social Worker104100000X
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES 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
Mailing address
Registry dates
- Enumerated
- 2015-11-02
- Last updated
- 2016-06-29
Frequently asked questions
- What is Nathan Greenfeld's NPI number?
- Nathan Greenfeld's National Provider Identifier (NPI) is 1073986964, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nathan Greenfeld's specialty?
- Nathan Greenfeld is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Nathan Greenfeld located?
- Nathan Greenfeld's practice location on file with NPPES is 18 Middleton St, Brooklyn, NY 11206-5415.
- What is Nathan Greenfeld's phone number?
- The practice phone number listed in the NPPES registry for Nathan Greenfeld is (718) 875-6900.
- Does Nathan Greenfeld accept Medicare?
- Nathan Greenfeld is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nathan Greenfeld's NPI active?
- Yes — Nathan Greenfeld's NPI (1073986964) is active in the NPPES registry as of the last update on 2016-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.