Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah Matzek

Social Worker in New Richmond, WI · enumerated 2015.

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

National Provider Identifier

1215312020

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Registry record

Entity type Individual (Type 1)

Name Sarah Matzek

Sex Female

Practice address 1752 Dorset Ln, New Richmond, WI, 54017

Phone (715) 246-6991

Enumeration date Jul 22, 2015

Last updated in NPPES Oct 18, 2022

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 129456 (WI) 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 Sarah Matzek?

Sarah Matzek 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 2022-10-18.