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

Diana Toumah, RDN

Individual provider Registered Dietitian · NPI 1003603697

Diana Toumah, RDN is a Registered Dietitian in Fontana, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2025
Specialties on file
2
What do these letters mean?
RDN — Registered Dietitian Nutritionist
The current title for a registered dietitian.

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Practice location Address checks out

7209 Marysville Pl
Fontana, CA 92336-2953
Phone: (909) 215-5797
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Registered Dietitian (primary) Taxonomy 133V00000X (CA)
Registered Dietitian Taxonomy 133V00000X

Record details

NPI number1003603697
Entity typeIndividual (Type 1)
GenderFemale
Credentials RDN
Sole proprietorYes
NPI enumeratedApril 24, 2025
Last updated in NPPESApril 25, 2025
Certification dateApril 25, 2025

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