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DR. JUDITH LINZER PHD
NPI 1487879268
Psychologist - Forensic in Castro Valley, CA

Active since April 16, 2007PECOS Enrolled
20200 REDWOOD ROAD, SUITE 2, CASTRO VALLEY, CA 94546(510) 887-8819(510) 655-7974 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Judith Linzer Phd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JUDITH LINZER PHD (NPI 1487879268) is an individual forensic provider in Castro Valley, California, licensed in California (PSY9833) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1487879268
Entity TypeIndividualFemale
Primary Taxonomy103TF0200X
Provider Legal NameDR. JUDITH LINZERCredential: PHD
Location Address20200 REDWOOD ROAD, SUITE 2Castro Valley, CA 94546
Mailing Address4096 Piedmont Ave, Suite 320Oakland, CA 94611 · (510) 887-8819 · Fax (510) 655-7974
Phone(510) 887-8819
Fax(510) 655-7974
Sole ProprietorNo
Enumeration DateApril 16, 2007
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1487879268 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 5

★ Primary SpecialtyPsychologist · ForensicBehavioral Health & Social Service Providers
Taxonomy Code103TF0200X
License✔ Licensed in CA · PSY9833
Definition
A psychologist whose specialty is characterized by activities primarily intended to provide professional psychological expertise within the judicial and legal systems.
Also ListedPsychologistTaxonomy 103T00000X · License PSY9833 (CA)
Also ListedPsychologist · ClinicalTaxonomy 103TC0700X · License PSY9833 (CA)
Also ListedPsychologist · Clinical Child & AdolescentTaxonomy 103TC2200X · License PSY9833 (CA)
Also ListedPsychologist · FamilyTaxonomy 103TF0000X · License PSY9833 (CA)
20200 REDWOOD ROAD, Castro Valley, CA 94546
Open in Google Maps ↗

Other Identifiers 1

Other075155Mnn

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Judith Linzer Phd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer– Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. CAROLYN BETH RICKETTS LCSW
Social Worker (Clinical)
20200 REDWOOD ROAD, SUITE 16
CASTRO VALLEY, CA 94546
Alameda County (408) 887-4267

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Judith Linzer's NPI number?

The NPI number for Judith Linzer is 1487879268. It was assigned to this individual provider in the NPPES registry on April 16, 2007.

Where is Judith Linzer located?

Judith Linzer practices at 20200 Redwood Road Suite 2, Castro Valley, CA 94546. The listed phone number is (510) 887-8819.

What is Judith Linzer's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Forensic, with taxonomy code 103TF0200X.

Is Judith Linzer enrolled in Medicare?

Yes. Judith Linzer is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Judith Linzer was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.