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 are available in Illinois? - 2018 What's the Difference Between an HMO and a PPO? Health Alliance Announces Virtual Visits for Group Members What Health Insurance Plans Does University of Chicago Accept in 2018? What plans will be available in the Peoria area in 2019? Comments 0 comments Please sign in to leave a comment.