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

Alta-Grace L Tan, Psy D Psychological Services, Inc

Organization Psychologist · NPI 1104920230

Alta-Grace L Tan, Psy D Psychological Services, Inc provides Psychologist services in Northridge, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

18546 Roscoe Blvd Ste 210
Northridge, CA 91324-5454 Not confirmed with CMS for 16 years — call before visiting
Phone: (818) 886-5628
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence PSY18653 (CA)

Record details

NPI number1104920230
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Alta-Grace Tan — Owner · (818) 523-1809
NPI enumeratedSeptember 11, 2006
Last updated in NPPESMay 28, 2010
Mailing address18546 Roscoe Blvd Ste 210, Northridge, CA 91324-5454

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