Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Brandon Dillenback, FNP

Nurse Practitioner in Fond Du Lac, WI · enumerated 2016.

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

National Provider Identifier

1275088072

Verified

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Registry record

Entity type Individual (Type 1)

Name Brandon Dillenback

Credential FNP

Sex Male

Practice address Fond Du Lac, WI, 54935

Phone (920) 926-8573

Fax (920) 926-8923

Enumeration date Aug 22, 2016

Last updated in NPPES Aug 3, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 14338-33 (WI) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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 is the NPI number for Brandon Dillenback?

The National Provider Identifier (NPI) for Brandon Dillenback is 1275088072, a Type 1 (individual) record in the CMS NPPES registry.

Where does Brandon Dillenback practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-03.