Ryan O Chadderton, PSYD.

Primary specialty

Marriage & Family TherapistTaxonomy code 106H00000X

License

164428 Issued in CA

Practice address

10331 Stanford Ave
Garden Grove, CA 92840-6351

Phone

(714) 663-6391

NPI assigned

Apr 4, 2007

Sex

Male

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

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

{
    "created_epoch": "1175644800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785369600000",
    "number": "1609998335",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10331 STANFORD AVE",
            "city": "GARDEN GROVE",
            "state": "CA",
            "postal_code": "928406351",
            "telephone_number": "714-663-6391"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10331 STANFORD AVE",
            "city": "GARDEN GROVE",
            "state": "CA",
            "postal_code": "928406351",
            "telephone_number": "714-663-6391"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHADDERTON",
        "first_name": "RYAN",
        "middle_name": "O",
        "name_prefix": "Mr.",
        "credential": "PSYD.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-04-04",
        "last_updated": "2026-07-30",
        "certification_date": "2026-07-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "CA",
            "license": "164428",
            "primary": true
        },
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "CA",
            "license": null,
            "primary": false
        },
        {
            "code": "225400000X",
            "taxonomy_group": "",
            "desc": "Rehabilitation Practitioner",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Marriage & Family Therapist in Garden Grove, CA
• Providers in Garden Grove, CA by specialty
• Marriage & Family Therapist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 30, 2026; 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.