Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Margaret S Clarke, LPC

Addiction (Substance Use Disorder) Counselor in New Providence, NJ · enumerated 2007.

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

National Provider Identifier

1013132836

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Registry record

Entity type Individual (Type 1)

Name Ms. Margaret S Clarke

Credential LPC

Sex Female

Practice address 890 Mountain Ave, New Providence, NJ, 07974

Phone (908) 277-8900

Fax (908) 508-8919

Enumeration date Apr 16, 2007

Last updated in NPPES May 8, 2024

Taxonomy & licenses

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 37PC00153200 (NJ) Secondary

101YP2500X Professional Counselor Behavioral Health & Social Service Providers · License 37PC001153200 (NJ) Secondary

101YA0400X Addiction (Substance Use Disorder) Counselor Behavioral Health & Social Service Providers · License 37PC001153200 (NJ) Primary

LPC · Licensed Professional Counselor: A licensed mental-health counselor providing psychotherapy. About the LPC 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

What specialty is Margaret Clarke?

Margaret Clarke 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-05-08.