Cook County Health, Medical Home Network ACO re-up partnership Jun 11, 2019 | Medicaid/Medicare, Top Stories Cook County Health and Medical Home Network’s Accountable Care Organization are extending their nearly five-year partnership until at least 2021.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.