Ronald John Crosthwaite

Primary specialty

Marriage & Family TherapistTaxonomy code 106H00000X

License

AMFT137868 Issued in CA

Practice address

1346 Foothill Blvd Ste 105
La Canada, CA 91011-4311

Phone

(818) 659-0480

NPI assigned

Sep 16, 2026

Last updated

Sep 16, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

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": "1789516800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789516800000",
    "number": "1659282515",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1346 FOOTHILL BLVD STE 105",
            "city": "LA CANADA",
            "state": "CA",
            "postal_code": "910114311",
            "telephone_number": "818-659-0480"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1346 FOOTHILL BLVD STE 105",
            "city": "LA CANADA",
            "state": "CA",
            "postal_code": "910114311",
            "telephone_number": "818-659-0480"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CROSTHWAITE",
        "first_name": "RONALD",
        "middle_name": "JOHN",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-09-16",
        "last_updated": "2026-09-16",
        "certification_date": "2026-09-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "CA",
            "license": "AMFT137868",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Tiare Coker
• Gary Lynn Coleman, MFT
• Theresa Marie Collins, LMFT
• Richard Alan Compton, DO, MPH
• Francesca Corley
• Belle Starr Cruz, PHT
• Russell Michael Dea
• Anahit S Derian, L.AC.
• Descanso Dermatology Medical Group
• David H Deter, D.D.S.

• Marriage & Family Therapist in La Canada, CA
• Providers in La Canada, 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 Sep 16, 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.