Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Courtney Marie Sterzinger

Physician Assistant in Waukesha, WI · enumerated 2025.

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

National Provider Identifier

1922976323

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Registry record

Entity type Individual (Type 1)

Name Courtney Marie Sterzinger

Sex Female

Practice address N20w22961 Watertown Rd, Waukesha, WI, 53186

Phone (262) 875-5070

Fax (866) 384-9486

Enumeration date Oct 27, 2025

Last updated in NPPES Jun 24, 2026

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 8608-23 (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.

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Frequently asked questions

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.

What specialty is Courtney Sterzinger?

Courtney Sterzinger is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-24.