Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Aaron Y Horowitz

Specialist in Brooklyn, NY · enumerated 2023.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598541328

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Registry record

Entity type Individual (Type 1)

Name Mr. Aaron Y Horowitz

Sex Male

Practice address 1312 38th St, Brooklyn, NY, 11218

Phone (718) 686-3700

Enumeration date Sep 7, 2023

Last updated in NPPES Sep 7, 2023

Taxonomy & licenses

174400000X Specialist Other Service Providers Primary

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.

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Frequently asked questions

How do I verify Aaron Horowitz's NPI record?

Cross-check NPI 1598541328 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1598541328 active?

Yes, as of the latest NPPES snapshot, NPI 1598541328 is active (record last updated 2023-09-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-07.