Spencer Crooks, PSYD

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

35707 Issued in CA

Practice address

1450 Treat Blvd Ste 320
Walnut Creek, CA 94597-2168

Phone

(925) 296-9880

Fax

(925) 296-9011

NPI assigned

Sep 6, 2018

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

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

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 2023

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

John Muir Physician NetworkGroup PAC ID 6608789813, 488 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• John Muir Physician Network

  • General Practice Physician
  • Walnut Creek, CA
  • NPI 1841407665
  Medicare reassignment Care Compare group NPD

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

{
    "created_epoch": "1536192000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1753747200000",
    "number": "1457834301",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1450 TREAT BLVD STE 300",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945972168",
            "telephone_number": "925-952-2828"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1450 TREAT BLVD STE 320",
            "city": "WALNUT CREEK",
            "state": "CA",
            "postal_code": "945972168",
            "telephone_number": "925-296-9880",
            "fax_number": "925-296-9011"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1918 University Ave Ste 2B",
            "address_purpose": "LOCATION",
            "city": "Berkeley",
            "state": "CA",
            "postal_code": "947043264",
            "country_code": "US",
            "telephone_number": "510-548-9716 x205",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CROOKS",
        "first_name": "SPENCER",
        "name_prefix": "Dr.",
        "credential": "PSYD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2018-09-06",
        "last_updated": "2025-07-29",
        "certification_date": "2025-07-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CA",
            "license": "35707",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Gail Jane Cristancho, LMFT
• John A Crockett, M.D.
• Carlos A. Cromeyer, MD
• Amanda Crompton, OTR/L
• Emily J. Cronbach, MD
• Jack Crosse
• Valinda Rose Croxton, LCSW
• Angelo Crudale, MD
• Keven Crusto
• Charlie Cruz

• 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 Jul 29, 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.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.