Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kathryn Wirtz, PA

Physician Assistant in Sussex, WI · enumerated 2006.

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

National Provider Identifier

1891762159

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Kathryn Wirtz

Credential PA

Sex Female

Practice address W227n6103 Sussex Rd, Sussex, WI, 53089

Phone (414) 566-8100

Fax (414) 566-8038

Enumeration date Mar 7, 2006

Last updated in NPPES Mar 22, 2022

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 339-023 (WI) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA 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

Where does Kathryn Wirtz practice?

The practice location on file with NPPES is in Sussex, WI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Kathryn Wirtz?

The National Provider Identifier (NPI) for Kathryn Wirtz is 1891762159, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-22.