Judith Linzer, PHD

Primary specialty

Forensic PsychologistTaxonomy code 103TF0200X

License

PSY9833 Issued in CA

Practice address

20200 Redwood Road
Suite 2
Castro Valley, CA 94546

Phone

(510) 887-8819

Fax

(510) 655-7974

NPI assigned

Apr 16, 2007

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 5

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Eligible to order & refer

• Part B services: No
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

State licenses

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1176681600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1487879268",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4096 PIEDMONT AVE",
            "address_2": "SUITE 320",
            "city": "OAKLAND",
            "state": "CA",
            "postal_code": "94611",
            "telephone_number": "510-887-8819",
            "fax_number": "510-655-7974"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "20200 REDWOOD ROAD",
            "address_2": "SUITE 2",
            "city": "CASTRO VALLEY",
            "state": "CA",
            "postal_code": "94546",
            "telephone_number": "510-887-8819",
            "fax_number": "510-655-7974"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LINZER",
        "first_name": "JUDITH",
        "name_prefix": "Dr.",
        "credential": "PHD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-04-16",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "CA",
            "license": "PSY9833",
            "primary": false
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CA",
            "license": "PSY9833",
            "primary": false
        },
        {
            "code": "103TC2200X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical Child & Adolescent",
            "state": "CA",
            "license": "PSY9833",
            "primary": false
        },
        {
            "code": "103TF0000X",
            "taxonomy_group": "",
            "desc": "Psychologist, Family",
            "state": "CA",
            "license": "PSY9833",
            "primary": false
        },
        {
            "code": "103TF0200X",
            "taxonomy_group": "",
            "desc": "Psychologist, Forensic",
            "state": "CA",
            "license": "PSY9833",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MNN",
            "identifier": "075155",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Sarah H Lindahl, PAC
• Myles Christopher Lindsey
• Ling Xu, MD,Inc.
• Robert Linson
• Joseph Lintag, P.T.
• Inna Lipkind, NP
• Jimmy DJ Liu, MD
• John Sic-Yiu Liu
• Steve Liu, PHARM.D.
• Connor Locke, PT, DPT

• Forensic Psychologist in Castro Valley, CA
• Providers in Castro Valley, CA by specialty
• Forensic Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.