Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine S Laszkiewicz, PA-C

Physician Assistant in Grafton, WI · enumerated 2018.

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

National Provider Identifier

1275029589

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Katherine S Laszkiewicz

Credential PA-C

Sex Female

Practice address 215 Washington St, Grafton, WI, 53024

Phone (262) 375-3700

Enumeration date Jul 10, 2018

Last updated in NPPES Sep 2, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 4847 (WI) Primary

Other identifiers

Identifier	Type	State	Issuer
1000092576	Medicaid	WI	-

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

Is NPI 1275029589 active?

Yes, as of the latest NPPES snapshot, NPI 1275029589 is active (record last updated 2025-09-02).

How do I verify Katherine Laszkiewicz's NPI record?

Cross-check NPI 1275029589 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-02.