Key Autism Services Il, LLC

Primary specialty

Adolescent and Children Mental Health Clinic/CenterTaxonomy code 261QM0855X

Legal business name

KEY AUTISM SERVICES IL, LLC

Practice address

100 Illinois St Ste 200
St Charles, IL 60174-1867

Phone

(857) 829-4040

NPI assigned

Jul 31, 2019

Last updated

Sep 18, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Mark Harper

Title

Dir of Operations

Phone

(857) 829-4040

Specialties & licenses 3

Addresses

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

{
    "created_epoch": "1564531200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1789689600000",
    "number": "1215581822",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 736079",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606736079"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 ILLINOIS ST STE 200",
            "city": "ST CHARLES",
            "state": "IL",
            "postal_code": "601741867",
            "telephone_number": "857-829-4040"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "KEY AUTISM SERVICES IL, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2019-07-31",
        "last_updated": "2026-09-18",
        "certification_date": "2026-09-18",
        "status": "A",
        "authorized_official_last_name": "HARPER",
        "authorized_official_first_name": "MARK",
        "authorized_official_title_or_position": "DIR OF OPERATIONS",
        "authorized_official_telephone_number": "857-829-4040"
    },
    "taxonomies": [
        {
            "code": "261QM0850X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Adult Mental Health",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "261QM0855X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Adolescent and Children Mental Health",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "251S00000X",
            "taxonomy_group": "",
            "desc": "Community/Behavioral Health",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Katelyn Mary Kendziora
• Kenneth a Noffsinger MD LTD
• Kenneth J Liesen MD SC
• Jamie Jenelle Kentgen, OTR/L
• Keven P Arnold DDS PC
• Keyes2Life, Inc.
• Thamir Riad Khader, M.D
• Rodina Khan
• Sandy Khong
• Renee Marie Kiel, LCSW

• Adolescent and Children Mental Health Clinic/Center in St Charles, IL
• Providers in St Charles, IL by specialty
• Adolescent and Children Mental Health Clinic/Center in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 18, 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.