Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Joseph S Demattia, P.A.-C
Physician Assistant in Wildomar, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1265547087
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Registry record
Entity type Individual (Type 1)
Name Joseph S Demattia
Credential P.A.-C
Sex Male
Practice address 36485 Inland Valley Dr, Wildomar, CA, 92595
Phone (909) 677-9773
Enumeration date Aug 20, 2006
Last updated in NPPES Oct 30, 2007
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA13663 (CA) Primary
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
Where does Joseph Demattia practice?
The practice location on file with NPPES is in Wildomar, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Joseph Demattia?
The National Provider Identifier (NPI) for Joseph Demattia is 1265547087, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Medical Laboratory Services Medical Group, Inc. Anatomic Pathology & Clinical Pathology Physician · Wildomar, CA NPI 1063477461 North Coast Imaging Radiology Medical Group, Inc. Diagnostic Radiology Physician · Wildomar, CA NPI 1245283217 A Davila Emergency Medicine Physician · Wildomar, CA NPI 1508808544 Julie Elias Physician Assistant · Wildomar, CA NPI 1194768663 Zeljka Kostich Emergency Medicine Physician · Wildomar, CA NPI 1487698114 Lisa Bornmann Physician Assistant · Wildomar, CA NPI 1083729891 Brent Jacobsen Emergency Medicine Physician · Wildomar, CA NPI 1790890465 Bret Ginther Emergency Medicine Physician · Wildomar, CA NPI 1861507626
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-30.