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Illinois Department of Human Services

Psychiatric Hospital in Chester, IL · enumerated 2005 · authorized official Michelle Zimmer, Reimbursement Office II Supervisor.

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

National Provider Identifier

1306834726

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Registry record

Entity type Organization (Type 2)
Legal business name Illinois Department of Human Services
Other name <Unavail>
Practice address 1315 Lehmen Dr, Chester, IL, 62233
Phone (618) 826-4571
Fax (618) 826-3229
Enumeration date Oct 10, 2005
Last updated in NPPES Jul 21, 2022

Taxonomy & classification

283Q00000X Psychiatric Hospital Hospitals Primary

Authorized official

Name Michelle Zimmer
Title Reimbursement Office II Supervisor
Phone (618) 826-4571

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 Illinois Department of Human Services?
The NPI for Illinois Department of Human Services is 1306834726, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Illinois Department of Human Services?
NPPES lists Michelle Zimmer (Reimbursement Office II Supervisor) as the authorized official for this organization.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.