Willow Behavior Therapy LLC

Primary specialty

Behavior AnalystTaxonomy code 103K00000X

Legal business name

WILLOW BEHAVIOR THERAPY LLC

Practice address

4616 SW Frontenac St
Seattle, WA 98136-1737

Phone

(425) 345-7114

NPI assigned

Jun 2, 2025

Organization subpart

No

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

Authorized official

Name

McCullough R Chastain

Title

Ceo

Phone

(425) 345-7114

Specialties & licenses 3

Addresses

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

{
    "created_epoch": "1748822400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1753315200000",
    "number": "1124911797",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6523 CALIFORNIA AVE SW STE 19",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981361833",
            "telephone_number": "425-345-7114"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4616 SW FRONTENAC ST",
            "city": "SEATTLE",
            "state": "WA",
            "postal_code": "981361737",
            "telephone_number": "425-345-7114"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WILLOW BEHAVIOR THERAPY LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2025-06-02",
        "last_updated": "2025-07-24",
        "certification_date": "2025-07-24",
        "status": "A",
        "authorized_official_last_name": "CHASTAIN",
        "authorized_official_first_name": "MCCULLOUGH",
        "authorized_official_middle_name": "R",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "425-345-7114"
    },
    "taxonomies": [
        {
            "code": "103K00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Behavior Analyst",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "106E00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Assistant Behavior Analyst",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "106S00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Behavior Technician",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Susan Willis, DDS
• Ykeisha M Willis
• Aron Willits, BAS
• Piera M Willner, M.S., CCC-SLP
• Katie Willott, MA
• Willow Fibromyalgia and Hypermobility Clinic PLLC
• Willow Roots Therapy
• Dov Elise Wills
• Howard Willson, MD
• Richard Atwood Willson, MD

• Behavior Analyst in Seattle, WA
• Providers in Seattle, WA by specialty
• Behavior Analyst in Washington

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 24, 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.