Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Barton H Greenberg, LCSW

Social Worker in Ridgewood, NJ · enumerated 2006.

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

National Provider Identifier

1831276419

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Registry record

Entity type Individual (Type 1)

Name Mr. Barton H Greenberg

Credential LCSW

Sex Male

Practice address 120 Chestnut Street, Ridgewood, NJ, 07450

Phone (201) 444-3550

Fax (201) 652-9164

Enumeration date Nov 1, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 44SC05295700 (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

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.

What specialty is Barton Greenberg?

Barton Greenberg is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.