Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Harry S. Zerler, M.A., L.C.A.D.C.

Addiction (Substance Use Disorder) Counselor in Hackettstown, NJ · enumerated 2005.

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

National Provider Identifier

1942294434

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Registry record

Entity type Individual (Type 1)

Name Harry S. Zerler

Credential M.A., L.C.A.D.C.

Sex Male

Practice address 38 Kim Ln, Hackettstown, NJ, 07840

Phone (908) 852-5536

Fax (908) 520-0396

Enumeration date Sep 10, 2005

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 37LC00026300 (NJ) 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

What specialty is Harry Zerler?

Harry Zerler is registered in NPPES with the primary taxonomy of Addiction (Substance Use Disorder) Counselor. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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