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

Individual provider Registered Respiratory Therapist · NPI 1467936872

Lester De Guzman, RRT is a Registered Respiratory Therapist in Fontana, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2018
What do these letters mean?
RRT — Registered Respiratory Therapist
Treats breathing disorders and manages ventilators.

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Practice location Address checks out

9961 Sierra Ave
Fontana, CA 92335-6720
Phone: (833) 574-2273
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Respiratory Therapist (primary) Taxonomy 227900000X · Licence 30457 (CA)

Record details

NPI number1467936872
Entity typeIndividual (Type 1)
GenderMale
Credentials RRT
Sole proprietorYes
NPI enumeratedSeptember 21, 2018
Last updated in NPPESNovember 10, 2021
Certification dateNovember 10, 2021
Mailing address9961 Sierra Ave, Fontana, CA 92335-6720

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