Malkey Wallerstein
NPI 1689204109 · Social Worker · Brooklyn, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Malkey Wallerstein is a Social Worker provider in Brooklyn, NY (NPI 1689204109).
Provider details
- NPI number
- 1689204109
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
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
6 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
- 2020-01-23
- Last updated
- 2020-01-23
- Certified
- 2020-01-23
Frequently asked questions
- What is Malkey Wallerstein's NPI number?
- Malkey Wallerstein's National Provider Identifier (NPI) is 1689204109, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Malkey Wallerstein's specialty?
- Malkey Wallerstein is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Malkey Wallerstein located?
- Malkey Wallerstein's practice location on file with NPPES is 5309 18th Ave, Brooklyn, NY 11204-1523.
- What is Malkey Wallerstein's phone number?
- The practice phone number listed in the NPPES registry for Malkey Wallerstein is (718) 705-5190.
- Does Malkey Wallerstein accept Medicare?
- Malkey Wallerstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Malkey Wallerstein's NPI active?
- Yes — Malkey Wallerstein's NPI (1689204109) is active in the NPPES registry as of the last update on 2020-01-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.