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

Ronaldo E Fermin DMD Inc

Organization General Practice Dentistry · NPI 1427198043

Ronaldo E Fermin DMD Inc is a General Practice Dentistry in South San Francisco, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

2400 Westborough Blvd Ste 104
South San Francisco, CA 94080-5402
Phone: (650) 878-1033
Fax: (650) 878-1031
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Dentistry (primary) Taxonomy 1223G0001X · Licence 35880 (CA)

Record details

NPI number1427198043
Entity typeOrganization (Type 2)
Organization subpartYes
Parent organizationRonaldo E Fermin DMD Inc Dba Gellert Dental Office
Authorized official Alicia Fermin — Co Owner Dentist Administrator And · (650) 878-1033
Other names Gellert Dental Office; Gellert Dental Office
NPI enumeratedFebruary 7, 2007
Last updated in NPPESJuly 13, 2020
Certification dateJuly 13, 2020
Mailing address2400 Westborough Blvd Ste 104, South San Francisco, CA 94080-5402

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