Willow ABA Services LLC

Primary specialty

Behavior AnalystTaxonomy code 103K00000X

Legal business name

WILLOW ABA SERVICES LLC

Practice address

15520 College Blvd
Lenexa, KS 66219-1353

Phone

(913) 386-5500

NPI assigned

Mar 2, 2020

Organization subpart

No

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

Authorized official

Name

Tanner Sierks

Title

Owner

Phone

(913) 375-3626

Specialties & licenses 1

Addresses

Other names 2

• Willow ABA Services Kansas Other name
• Willow ABA Services LLC Kansas Other name

Locations

Practitioners 1

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Natalie Craig Kay Craig

  • Behavior Technician
  • Overland Park, KS
  • NPI 1841937588
  NPD (past)

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

{
    "created_epoch": "1583107200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1758844800000",
    "number": "1881228666",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "15520 COLLEGE BLVD",
            "city": "LENEXA",
            "state": "KS",
            "postal_code": "662191353",
            "telephone_number": "913-386-5500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "15520 COLLEGE BLVD",
            "city": "LENEXA",
            "state": "KS",
            "postal_code": "662191353",
            "telephone_number": "913-386-5500"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "WILLOW ABA SERVICES LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2020-03-02",
        "last_updated": "2025-09-26",
        "certification_date": "2025-09-26",
        "status": "A",
        "authorized_official_last_name": "SIERKS",
        "authorized_official_first_name": "TANNER",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "913-375-3626"
    },
    "taxonomies": [
        {
            "code": "103K00000X",
            "taxonomy_group": "193400000X MULTIPLE SINGLE SPECIALTY GROUP",
            "desc": "Behavior Analyst",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Willow ABA Services Kansas",
            "code": "5",
            "type": "Other Name"
        },
        {
            "organization_name": "Willow ABA Services LLC Kansas",
            "code": "5",
            "type": "Other Name"
        },
        {
            "organization_name": "Willow ABA Services LLC Kansas",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

• Evan Matthew Williams
• Kathi Jo Williams, LCMFT
• Andrew Mackay Williamson
• Marie Willis, AU.D., CCC-A, F-AAA
• Laura Willoughby
• Willow SLP Services LLC
• Willow Transportation Services LLC
• Joseph Robert Wilner, LMLP
• Elizabeth Brook Wilson, M.S CFY-SLP
• Gretchen Wilson

• Behavior Analyst in Lenexa, KS
• Providers in Lenexa, KS by specialty
• Behavior Analyst in Kansas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 26, 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.