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

Individual provider Clinical Psychologist · NPI 1053627117

Dr. Long Tuan On, PSYD is a Clinical Psychologist in Walnut Creek, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
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

35 Pinewood Ct
Walnut Creek, CA 94597-3111
Phone: (408) 547-7736
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 34774 (CA)

Record details

NPI number1053627117
Entity typeIndividual (Type 1)
GenderMale
Credentials PSYD
Sole proprietorYes
NPI enumeratedAugust 27, 2010
Last updated in NPPESApril 25, 2025
Certification dateApril 25, 2025

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