Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John Nolan Tessendorf, DDS

General Practice Dentistry in Eau Claire, WI · enumerated 2007 · practices at D H C S C.

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

National Provider Identifier

1891992483

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Registry record

Entity type Individual (Type 1)

Name Dr. John Nolan Tessendorf

Credential DDS

Sex Male

Practice address 215 5th Ave, Eau Claire, WI, 54703

Phone (715) 832-3100

Fax (715) 832-3170

Enumeration date Jun 28, 2007

Last updated in NPPES Jun 15, 2015

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 2245 (WI) Primary

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

Other identifiers

Identifier	Type	State	Issuer
392011392	Other	WI	TAX ID #

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 John Tessendorf practice?

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

What is the NPI number for John Tessendorf?

The National Provider Identifier (NPI) for John Tessendorf is 1891992483, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

D H C S C Dentist · Eau Claire, WI NPI 1952618225 Thomas Tessendorf General Practice Dentistry · Eau Claire, WI NPI 1992064661

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-15.