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  • Medicaid Provider Alert: Provider revalidation has begun and those not completing the process risk disenrollment.  Check your account now to learn when your revalidation is due. More information here.

Our new Child Support Cook Central Office at 115 South LaSalle Street, Chicago, is now open for in-person assistance.  We also have other regional office locations to better serve you! 

Elizabeth M. Whitehorn, Director

Participant Eligibility Information

Participant eligibility information can be obtained by calling 1-800-842-1461. This number will be answered by the Automated Voice Response System (AVRS). To check eligibility on AVRS, providers will need the

    • 9-, 10-, or 12-digit Medicaid provider number

    • 9-digit Recipient Identification Number (RIN)

    • Date for which eligibility information is being sought

The AVRS will provide all information relating to a participant's eligibility and will permit up to 6 eligibility inquiries during each telephone call.

If the provider has a question that cannot be answered by AVRS or needs the participant's RIN, the provider can select the option of speaking to a person. The call will be transferred to the next available Provider Eligibility Inquiry Hotline representative. Hotline representatives are available from 8:30 a.m. to 4:45 p.m. each work day.