John Willard Howell, PSY.D.

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

25920 Issued in CA

Practice address

333 South Twin Oaks Valley Road
San Marcos, CA 92096-4411

Phone

(425) 281-4032

NPI assigned

Apr 9, 2007

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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

State licenses

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

{
    "created_epoch": "1176076800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1742169600000",
    "number": "1740303163",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1270 CLEVELAND AVE UNIT F349",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921033386",
            "telephone_number": "760-682-8383"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "333 SOUTH TWIN OAKS VALLEY ROAD",
            "city": "SAN MARCOS",
            "state": "CA",
            "postal_code": "920964411",
            "telephone_number": "425-281-4032"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "HOWELL",
        "first_name": "JOHN",
        "middle_name": "WILLARD",
        "name_prefix": "Dr.",
        "credential": "PSY.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-04-09",
        "last_updated": "2025-03-17",
        "certification_date": "2025-03-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "WA",
            "license": "PY00003532",
            "primary": false
        },
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CA",
            "license": "25920",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Nicole T Horne, LMFT
• Rayann Householder
• Mackenzee Hovis
• Nelson Y. Howard, D.D.S.
• Angelica Howell
• Kimberly Susan Howell
• Lana Hoyer, LMFT
• Jeu Hsing Wong, PHARMD
• Ching-Ling Hsu
• Brian Hua, DDS

• Clinical Psychologist in San Marcos, CA
• Providers in San Marcos, CA by specialty
• Clinical Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 17, 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.