Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arlene Katz, LMSW

Q: What is the NPI number for Arlene Katz?

The National Provider Identifier (NPI) for Arlene Katz is 1558377507, a Type 1 (individual) record in the CMS NPPES registry.

Social Worker in Huntington, NY · enumerated 2006.

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

National Provider Identifier

1558377507

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Registry record

Entity type Individual (Type 1)

Name Arlene Katz

Credential LMSW

Sex Female

Practice address 55 Horizon Dr, Huntington, NY, 11743

Phone (631) 920-8000

Enumeration date Jul 31, 2006

Last updated in NPPES Mar 17, 2008

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 057002-1 (NY) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Arlene Katz practice?

The practice location on file with NPPES is in Huntington, NY. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Arlene Katz?

The National Provider Identifier (NPI) for Arlene Katz is 1558377507, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-17.