Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dayton P Stumpf, NP

Nurse Practitioner in Oshkosh, WI · enumerated 2012.

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

National Provider Identifier

1427303866

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Registry record

Entity type Individual (Type 1)

Name Dayton P Stumpf

Credential NP

Sex Female

Practice address 855 N Westhaven Dr, Oshkosh, WI, 54904

Phone (920) 303-8700

Enumeration date Jul 23, 2012

Last updated in NPPES Nov 24, 2021

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4886-33 (WI) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

What specialty is Dayton Stumpf?

Dayton Stumpf is registered in NPPES with the primary taxonomy of 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 2021-11-24.