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

Mrs. Diana Peterson Johnson, LCSW

Individual provider Clinical Social Worker · NPI 1992137269

Mrs. Diana Peterson Johnson, LCSW is a Clinical Social Worker in Sunnyvale, California. Licensed in California. Registered with an NPI since 2013.

Licensed in
CA
In the registry since
2013
Specialties on file
2
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

450 N Sunnyvale Ave
Sunnyvale, CA 94085-4320
Phone: (408) 522-8200
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

School Social Worker (primary) Taxonomy 1041S0200X · Licence 91750 (CA)
Clinical Social Worker Taxonomy 1041C0700X

Record details

NPI number1992137269
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorNo
NPI enumeratedAugust 8, 2013
Last updated in NPPESAugust 22, 2025
Certification dateAugust 22, 2025

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