Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kathryn J. Smrz, APNP

Adult Health Nurse Practitioner in Marshfield, WI · enumerated 2013.

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

National Provider Identifier

1972938314

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Registry record

Entity type Individual (Type 1)

Name Kathryn J. Smrz

Credential APNP

Sex Female

Practice address 1000 North Oak Avenue, Marshfield, WI, 54449

Phone (715) 387-5511

Enumeration date Sep 4, 2013

Last updated in NPPES Jul 29, 2025

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5438 (WI) Secondary

363LA2200X Adult Health Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 5438 (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 Kathryn Smrz?

Kathryn Smrz is registered in NPPES with the primary taxonomy of Adult Health Nurse Practitioner. 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 2025-07-29.