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

Dr. Mark Anthony Boldt, DDS

Q: What is the NPI number for Mark Boldt?

The National Provider Identifier (NPI) for Mark Boldt is 1831291996, a Type 1 (individual) record in the CMS NPPES registry.

Prosthodontics in West Allis, WI · enumerated 2006.

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

National Provider Identifier

1831291996

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Anthony Boldt

Credential DDS

Sex Male

Practice address West Allis, WI, 53227

Phone (414) 545-5225

Fax (414) 545-5251

Enumeration date Sep 1, 2006

Last updated in NPPES Feb 10, 2017

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

Taxonomy & licenses

1223P0700X Prosthodontics Dental Providers · License 4290-015 (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

What is the NPI number for Mark Boldt?

The National Provider Identifier (NPI) for Mark Boldt is 1831291996, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Boldt practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-02-10.