Skip to main content
  • 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.
  • The Cook Central Office, 36 South Wabash Avenue, Chicago, will close 02/03/2025.  The new Cook Central Office will open at 115 South LaSalle, Chicago, for in-person service on 02/10/2025.  
  • ​UPDATE: The State Disbursement Unit (SDU) is processing all payments received. To verify the status of your payment, please log into the SDU parent portal or contact the SDU Customer Service Call Center at 877.225.7077.  For SDU business hours, click here.
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.