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

Individual provider Psychologist · NPI 1023321734

Dr. Diana Mah, PSYD is a Psychologist in Rialto, California. Practices as a sole proprietor. Registered with an NPI since 2010.

In the registry since
2010
What do these letters mean?
PSYD — Doctor of Psychology
A doctoral psychologist trained primarily for clinical practice.

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Practice location Address checks out

850 E Foothill Blvd
Rialto, CA 92376-5230
Phone: (909) 421-9380
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X

Record details

NPI number1023321734
Entity typeIndividual (Type 1)
GenderFemale
Credentials PSYD
Sole proprietorYes
NPI enumeratedJuly 22, 2010
Last updated in NPPESJanuary 9, 2019

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