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Key Autism Services Il, LLC

Adolescent and Children Mental Health Clinic/Center in St Charles, IL · enumerated 2019 · authorized official Mark Harper, Dir of Operations.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1215581822

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Registry record

Entity type Organization (Type 2)
Legal business name Key Autism Services Il, LLC
Practice address 100 Illinois St Ste 200, St Charles, IL, 60174
Phone (857) 829-4040
Enumeration date Jul 31, 2019
Last updated in NPPES Jun 29, 2023

Taxonomy & classification

251S00000X Community/Behavioral Health Agency Agencies Secondary
261QM0850X Adult Mental Health Clinic/Center Ambulatory Health Care Facilities Secondary
261QM0855X Adolescent and Children Mental Health Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Mark Harper
Title Dir of Operations
Phone (857) 829-4040

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

What is the NPI number for Key Autism Services Il, LLC?
The NPI for Key Autism Services Il, LLC is 1215581822, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Key Autism Services Il, LLC?
NPPES lists Mark Harper (Dir of Operations) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-29.