Ascension exploring partnership with Centene on health plan Aug 1, 2018 | HNI Stories, Medicaid/Medicare, Top Stories Ascension is exploring a joint venture with Centene to establish a Medicare Advantage plan, the two healthcare organizations announced this week.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.