NPI Portal NPI Lookup & Verification

Mr. Aaron Joel Gropper

Mr. Aaron Joel Gropper is a Specialist provider (Specialist) practicing in Brooklyn, NY, registered in the NPPES registry with NPI 1609597020 since 2022.

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NPI 1609597020
Entity type Individual (Type 1)
Name Mr. Aaron Joel Gropper
Sex Male
Practice address 1312 38TH ST, Brooklyn, NY, 11218
Phone 7186863700
Enumeration date 2022-09-05
Last updated in NPPES 2022-09-05

Taxonomy & licenses

Taxonomy code Specialty Primary License State
174400000X Specialist Primary
Copy-ready billing details
Provider: Aaron Gropper
NPI: 1609597020
Taxonomy: 174400000X (Specialist)
Address: 1312 38TH ST, Brooklyn, NY, 11218

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1255258315 Alesandra Mavashev Individual Specialist Brooklyn, NY
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1083850648 Yeled V'Yalda Early Childhood Center Inc. Organization Early Intervention Provider Agency Brooklyn, NY
1033350582 Esther Perlstein-Weiss Individual Speech-Language Pathologist Brooklyn, NY
1144464538 Rivka Falk Individual Speech-Language Pathologist Brooklyn, NY

Verify this record

Cross-check NPI 1609597020 against the authoritative CMS record: view Mr. Aaron Joel Gropper on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

What specialty is Aaron Gropper?
Aaron Gropper is registered in NPPES with the primary taxonomy of Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2022-09-05.