What is Malky Grunzweig's NPI number?

Malky Grunzweig's National Provider Identifier (NPI) is 1669356077, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Malky Grunzweig's specialty?

Malky Grunzweig is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).

Where is Malky Grunzweig located?

Malky Grunzweig's practice location on file with NPPES is 1312 38th St, Brooklyn, NY 11218-3612.

What is Malky Grunzweig's phone number?

The practice phone number listed in the NPPES registry for Malky Grunzweig is (718) 686-3700.

Is Malky Grunzweig's NPI active?

Yes — Malky Grunzweig's NPI (1669356077) is active in the NPPES registry as of the last update on 2025-07-31.

IndividualActive

Malky Grunzweig

NPI 1669356077 · Specialist · Brooklyn, NY

Malky Grunzweig is a Specialist provider in Brooklyn, NY (NPI 1669356077).

Provider details

NPI number: 1669356077
Entity type: Individual
Primary specialty: SpecialistOther Service Providers
Sex: Female
Sole proprietor: No

Specialties & taxonomies

SpecialistPrimary174400000X
Other 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

1312 38th St

Brooklyn, NY 11218-3612

Phone: (718) 686-3700

Street-level locationGet directions

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Mailing address