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

Guillermo S, Castillo DDS Dental Corporation

Organization Dentist · NPI 1679011472

Guillermo S, Castillo DDS Dental Corporation is a Dentist in Upland, California. Licensed in California. Registered with an NPI since 2017.

Licensed in
CA
In the registry since
2017
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Practice location Address checks out

1030 E Foothill Blvd # B-102
Upland, CA 91786-4057
Phone: (909) 981-3000
Fax: (909) 981-1311
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Dentist (primary) Taxonomy 122300000X · Licence 50896 (CA)

Record details

NPI number1679011472
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Gaby Tirado — Hr Coordinator · (760) 244-1111
NPI enumeratedFebruary 1, 2017
Last updated in NPPESOctober 25, 2022
Certification dateOctober 25, 2022
Mailing address15278 Main St, Suite E, Hesperia, CA 92345-3300

Other providers in Upland