Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Gregory P. Mathieu, DDS
Pediatric Dentistry in Goodyear, AZ · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1255496840
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Registry record
Entity type Individual (Type 1)
Name Gregory P. Mathieu
Credential DDS
Sex Male
Practice address 14425 W Mcdowell Rd, Suite F102, Goodyear, AZ, 85395
Phone (623) 536-0079
Fax (623) 535-5176
Enumeration date Dec 26, 2006
Last updated in NPPES Nov 23, 2009
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Gregory Mathieu?
The National Provider Identifier (NPI) for Gregory Mathieu is 1255496840, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gregory Mathieu practice?
The practice location on file with NPPES is in Goodyear, AZ. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-23.