The Medicaid Office in Illinois can assist with questions about the Illinois Medicaid Program. This program is state funded for individuals and families in need to help pay for medical care. This could include coverage for doctor visits, hospital visits, dental care, vision care and other medical needs. Below we list the Illinois Medicaid office phone number, address and online website so you can contact them to see if you are eligible for the Illinois medicaid program. The department that handles the Medicaid Program in Illinois is called Illinois Department of Healthcare and Family Services.