Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marco Javier Castellanos, DDS
Dentist in Fontana, CA · enumerated 2013.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1396083465
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Registry record
Entity type Individual (Type 1)
Name Marco Javier Castellanos
Credential DDS
Sex Male
Practice address 9725 Sierra Ave, Fontana, CA, 92335
Phone (909) 822-6200
Fax (909) 822-6222
Enumeration date Jan 24, 2013
Last updated in NPPES Jan 24, 2013
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
Where does Marco Castellanos practice?
The practice location on file with NPPES is in Fontana, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Marco Castellanos?
The National Provider Identifier (NPI) for Marco Castellanos is 1396083465, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-24.