What areas of Illinois does Health Alliance cover? Ernie Harris October 29, 2018 00:02 Updated Follow The above map shows where health coverage is available. Health Alliance is a great option for people in central and southern illinois. Get Quotes & Enroll Related articles What Health Insurance Plans Does University of Chicago Accept in 2020? Ambetter Illinois 2020 Guide What plans will be available in the Peoria area in 2020? Comments 0 comments Please sign in to leave a comment.