Timothy Yen, Psy.D., a Professional Psychology Corp

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

Legal business name

TIMOTHY YEN, PSY.D., A PROFESSIONAL PSYCHOLOGY CORP

Practice address

1460 Maria LN Ste 310
Walnut Creek, CA 94596-8803

Phone

(925) 385-8228

NPI assigned

Oct 16, 2025

Organization subpart

No

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

Authorized official

Name

Dr. Timothy Yen, PSYDNPI 1811244825

Title

Owner/Ceo

Phone

(714) 726-5051

Specialties & licenses 3

Addresses

Tax ID family

Pivot Counseling2 organizations share this tax ID, including this one

Other organizations with this tax ID 1

Organizations that report the same tax identification number in the National Provider Directory.

• Timothy Yen, Psy.D., a Professional Psychology Corp

  • Mental Health Counselor
  • Walnut Creek, CA
  • NPI 1376380618
  NPD tax ID

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Timothy KC Yen, PSYD

  • Clinical Psychologist
  • Dublin, CA
  • NPI 1811244825
  NPD Authorized official

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

{
    "created_epoch": "1760572800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1760572800000",
    "number": "1902772759",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1433 RAMSAY CIR",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945972342",
            "telephone_number": "925-385-8228"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1460 MARIA LN STE 310",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945968803",
            "telephone_number": "925-385-8228"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "TIMOTHY YEN, PSY.D., A PROFESSIONAL PSYCHOLOGY CORP",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-10-16",
        "last_updated": "2025-10-16",
        "certification_date": "2025-10-16",
        "status": "A",
        "authorized_official_last_name": "YEN",
        "authorized_official_first_name": "TIMOTHY",
        "authorized_official_title_or_position": "OWNER/CEO",
        "authorized_official_telephone_number": "714-726-5051",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "PSYD"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Psychologist, Clinical",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "133V00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dietitian, Registered",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2084P0800X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Psychiatry & Neurology, Psychiatry",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Christian Ray Timbol, MD
• Laura A. Timmerman, M.D.
• Timothy a Carlton MD a Professional Corp
• Timothy a. Leach MD Inc
• Timothy Yen, Psy.D., a Professional Psychology Corp
• Nadiya S Timothy
• Tina Larson Professional Clinical Counselor Prof Corp
• Gabriela Tinajero
• Adham Tinawi Jr.
• Karen Tinder, NP

• Clinical Psychologist in Walnut Creek, CA
• Providers in Walnut Creek, CA by specialty
• Clinical Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Oct 16, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.