Timothy O'Rourke has been appointed president of the Medicare division in Illinois, Michigan and Wisconsin for Humana Inc. He will be responsible for operational leadership of Medicare HMO and PPO health plans, Medicare prescription drug plans, Medicare supplement policies and private fee-for-service health plans offered to people eligible for Medicare in the three-state Great Lakes region. O'Rourke joins Humana from Aveta Inc., where he served as president of new-market development. Before he joined Aveta, O'Rourke was with Humana from 2002 to 2011, serving in multiple leadership roles including national vice president of provider engagement, vice president of national contracting for the east region, vice president of network management for the northeast region, and director of Medicare networks and operations. O'Rourke earned his Bachelor's degree from Northern Illinois University.