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

Janet M Stier PHD Clinical Psychologist PC

Organization Adult Mental Health Clinic/Center · NPI 1861206781

Janet M Stier PHD Clinical Psychologist PC is an Adult Mental Health Clinic/Center in Valencia, California. Registered with an NPI since 2025.

In the registry since
2025
Specialties on file
2
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

23822 Valencia Blvd Ste 203
Valencia, CA 91355-5344
Phone: (661) 310-8410
Fax: (661) 678-0711
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Adolescent and Children Mental Health Clinic/Center (primary) Taxonomy 261QM0855X
Adult Mental Health Clinic/Center Taxonomy 261QM0850X

Record details

NPI number1861206781
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Janet Stier — Clinical Psychologist/President · (661) 310-8410
NPI enumeratedFebruary 3, 2025
Last updated in NPPESSeptember 2, 2025
Certification dateSeptember 2, 2025
Mailing address23822 Valencia Blvd Ste 203, Valencia, CA 91355-5344

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