Judith Linzer, PHD
NPI 1487879268 · Forensic Psychologist · Castro Valley, CA
Enrolled with Medicare as Order and Referring Only - Clinical Psychologist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Judith Linzer, PHD is a Forensic Psychologist provider in Castro Valley, CA (NPI 1487879268).
Provider details
- NPI number
- 1487879268
- Entity type
- Individual
- Primary specialty
- Forensic PsychologistBehavioral Health & Social Service Providers
- Credential
- PHD
- Sex
- Female
- Sole proprietor
- No
- License
- PSY9833 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-04-16
- Last updated
- 2025-09-11
Frequently asked questions
- What is Judith Linzer's NPI number?
- Judith Linzer's National Provider Identifier (NPI) is 1487879268, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Judith Linzer's specialty?
- Judith Linzer is listed in the NPPES registry with a primary specialty of Forensic Psychologist (Behavioral Health & Social Service Providers).
- Where is Judith Linzer located?
- Judith Linzer's practice location on file with NPPES is 20200 Redwood Road, Castro Valley, CA 94546.
- What is Judith Linzer's phone number?
- The practice phone number listed in the NPPES registry for Judith Linzer is (510) 887-8819.
- Does Judith Linzer accept Medicare?
- Judith Linzer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Judith Linzer's NPI active?
- Yes — Judith Linzer's NPI (1487879268) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.