Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel Strand Mahn, D.D.S.

Q: What is the NPI number for Daniel Mahn?

The National Provider Identifier (NPI) for Daniel Mahn is 1154540987, a Type 1 (individual) record in the CMS NPPES registry.

General Practice Dentistry in Fond Du Lac, WI · enumerated 2007 · practices at Dental Assosiates.

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

National Provider Identifier

1154540987

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Registry record

Entity type Individual (Type 1)

Name Dr. Daniel Strand Mahn

Credential D.D.S.

Sex Male

Practice address 545 E Johnson St, Fond Du Lac, WI, 54935

Phone (414) 403-3731

Enumeration date Apr 24, 2007

Last updated in NPPES Mar 10, 2020

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 4021-015 (WI) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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

Where does Daniel Mahn 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.

What is the NPI number for Daniel Mahn?

The National Provider Identifier (NPI) for Daniel Mahn is 1154540987, 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 2020-03-10.