Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Matthew Isaac Maddox, DDS
Dentist in Newbury Park, CA · enumerated 2020.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1639794266
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Registry record
Entity type Individual (Type 1)
Name Matthew Isaac Maddox
Credential DDS
Sex Male
Practice address 1000 Newbury Rd Ste 150, Newbury Park, CA, 91320
Phone (805) 498-3640
Fax (805) 498-3641
Enumeration date Jun 9, 2020
Last updated in NPPES Jul 27, 2023
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 specialty is Matthew Maddox?
Matthew Maddox is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Allan Laird Chiropractor · Newbury Park, CA NPI 1174665640 Anton Hoang Dentist · Newbury Park, CA NPI 1396056651 Angela Sepulveda Velez Family Medicine Physician · Newbury Park, CA NPI 1922505494 Anjani Hagan Family Medicine Physician · Newbury Park, CA NPI 1043873185 Tammy Prado Family Nurse Practitioner · Newbury Park, CA NPI 1962036285 Jennifer Simon Marriage & Family Therapist · Newbury Park, CA NPI 1689359770
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-27.