Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael P. Olsen, D.D.S.

Dentist in Onalaska, WI · enumerated 2007 · practices at Dental Clinic of Onalaska.

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

National Provider Identifier

1841400066

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael P. Olsen

Credential D.D.S.

Sex Male

Practice address 1008 Main St, Onalaska, WI, 54650

Phone (608) 783-3341

Fax (608) 783-4309

Enumeration date May 23, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

122300000X Dentist Dental Providers · License 4528 (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

What is the NPI number for Michael Olsen?

The National Provider Identifier (NPI) for Michael Olsen is 1841400066, a Type 1 (individual) record in the CMS NPPES registry.

Where does Michael Olsen practice?

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

Other providers at this practice address

Browse all →

Dental Clinic of Onalaska Dentist · Onalaska, WI NPI 1508076704 William Baumgardner Dentist · Onalaska, WI NPI 1851501084 Zachary Earll General Practice Dentistry · Onalaska, WI NPI 1518897453

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.