Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Usher Gruenstein, LCSW

Clinical Social Worker in Jackson, NJ · enumerated 2018.

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

National Provider Identifier

1023595832

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Registry record

Entity type Individual (Type 1)

Name Usher Gruenstein

Credential LCSW

Sex Male

Practice address 101 Valley Rd, Jackson, NJ, 08527

Phone (347) 631-5421

Enumeration date Jul 24, 2018

Last updated in NPPES May 15, 2025

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 097324 (NY) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 44SC06482500 (NJ) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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 → Validate an NPI →

Frequently asked questions

How do I verify Usher Gruenstein's NPI record?

Cross-check NPI 1023595832 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1023595832 active?

Yes, as of the latest NPPES snapshot, NPI 1023595832 is active (record last updated 2025-05-15).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-15.