Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

The Young Men'S Christian Association of Long Island Incorporated

Substance Use Disorder Rehabilitation Clinic/Center in Holtsville, NY · enumerated 2006 · authorized official Mark Katzenberger, Cfo.

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

National Provider Identifier

1952476129

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Registry record

Entity type Organization (Type 2)

Legal business name The Young Men'S Christian Association of Long Island Incorporated

Practice address 1150 Portion Rd, Suite 6, Holtsville, NY, 11742

Phone (631) 580-7777

Fax (631) 580-7773

Enumeration date Nov 22, 2006

Last updated in NPPES Apr 3, 2017

Taxonomy & classification

174H00000X Health Educator Other Service Providers Secondary

261QR0405X Substance Use Disorder Rehabilitation Clinic/Center Ambulatory Health Care Facilities · License 70611543 (NY) Primary

Authorized official

Name Mark Katzenberger

Title Cfo

Phone (516) 674-8290

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

Who is the authorized official for The Young Men'S Christian Association of Long Island Incorporated?

NPPES lists Mark Katzenberger (Cfo) as the authorized official for this organization.

What is the NPI number for The Young Men'S Christian Association of Long Island Incorporated?

The NPI for The Young Men'S Christian Association of Long Island Incorporated is 1952476129, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-03.