Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kate M Ratajczak, APNP

Nurse Practitioner in Sheboygan, WI · enumerated 2012.

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

National Provider Identifier

1306199435

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Registry record

Entity type Individual (Type 1)

Name Kate M Ratajczak

Credential APNP

Sex Female

Practice address 1703 N Taylor Dr, Sheboygan, WI, 53081

Phone (920) 457-4438

Enumeration date Oct 26, 2012

Last updated in NPPES May 12, 2022

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5088-33 (WI) Secondary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5088-33 (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

Where does Kate Ratajczak practice?

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

What is the NPI number for Kate Ratajczak?

The National Provider Identifier (NPI) for Kate Ratajczak is 1306199435, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-12.