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

Timothy Yen, Psy D , a Professional Psychology Corp

Organization Clinical Psychologist · NPI 1902772759

Timothy Yen, Psy D , a Professional Psychology Corp is a Clinical Psychologist in Walnut Creek, California. Registered with an NPI since 2025.

In the registry since
2025
Specialties on file
3
What do these letters mean?
Corp — Corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1460 Maria Ln Ste 310
Walnut Creek, CA 94596-8803
Phone: (925) 385-8228
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X
Registered Dietitian Taxonomy 133V00000X
Psychiatry Physician Taxonomy 2084P0800X

Record details

NPI number1902772759
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Timothy Yen — Owner/Ceo · (714) 726-5051
NPI enumeratedOctober 16, 2025
Last updated in NPPESOctober 16, 2025
Certification dateOctober 16, 2025
Mailing address1433 Ramsay Cir, Walnut Creek, CA 94597-2342

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