Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Madison Elizabeth Clark, MSW, LSW

Social Worker in Williamsport, PA · enumerated 2025.

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

National Provider Identifier

1720942998

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Registry record

Entity type Individual (Type 1)

Name Madison Elizabeth Clark

Credential MSW, LSW

Sex Female

Practice address 1990 W 3rd St, Williamsport, PA, 17701

Phone (570) 320-2816

Fax (570) 320-0201

Enumeration date Dec 12, 2025

Last updated in NPPES Dec 12, 2025

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License SW143752 (PA) 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.

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Frequently asked questions

What specialty is Madison Clark?

Madison Clark 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.

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 2025-12-12.