Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Edmund Nadeau, D.M.D.

Q: What is the NPI number for Mark Nadeau?

The National Provider Identifier (NPI) for Mark Nadeau is 1568785798, a Type 1 (individual) record in the CMS NPPES registry.

Orthodontics and Dentofacial Orthopedics Dentistry in Kennebunk, ME · enumerated 2010.

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

National Provider Identifier

1568785798

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Edmund Nadeau

Credential D.M.D.

Sex Male

Practice address 63 Portland Rd, Kennebunk, ME, 04043

Phone (207) 985-8999

Fax (207) 985-8965

Enumeration date Mar 2, 2010

Last updated in NPPES Mar 2, 2010

Taxonomy & licenses

1223X0400X Orthodontics and Dentofacial Orthopedics Dentistry Dental Providers · License 3590 (ME) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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 Nadeau?

The National Provider Identifier (NPI) for Mark Nadeau is 1568785798, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mark Nadeau practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-03-02.