Certificate Books Certificate books describe what is covered by your plan. View all of our 2024 certificate books below. Expand All Collapse All Medical Mutual of Ohio – Small Group HMO and PPO Plans HMO Plans HMO CLE-CARE HMO BRONZE HSA 6100 HMO SILVER 3530-4250 HMO GOLD 2520-1500 HMO MEDFLEX HMO BRONZE HSA 6100 HMO SILVER 3530-4250 HMO GOLD 2520-1500 PPO Plans PPO BRONZE HSA 6100 PPO SILVER 3530-4250 PPO GOLD 2520-1500 Medical Mutual of Ohio – Small Group Dental and Vision Plans Dental Plans MMO Dental Plan 4 MMO Dental Plan 4 with Ortho MMO Dental Plan 5 Vision Plans MMO EyeMed Vision Only MMO VSP Vision Only