Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mario Javier Castellanos Jr., DDS

Individual provider Dentist · NPI 1285927962

Mario Javier Castellanos Jr., DDS is a Dentist in Fontana, California. Licensed in California. Registered with an NPI since 2011.

Licensed in
CA
In the registry since
2011
What do these letters mean?
DDS — Doctor of Dental Surgery
A dentist. DDS and DMD are the same qualification — universities choose which title to award.

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Practice location Address checks out

9725 Sierra Ave
Fontana, CA 92335-6716
Phone: (909) 822-6200
Fax: (909) 822-6222
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dentist (primary) Taxonomy 122300000X · Licence 60364 (CA)

Record details

NPI number1285927962
Entity typeIndividual (Type 1)
GenderMale
Credentials DDS
Sole proprietorNo
NPI enumeratedMay 27, 2011
Last updated in NPPESMay 27, 2011

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