Certificate Books Certificate books describe what is covered by your plan. View all of our 2027 certificate books below. Medical Mutual of Ohio – Small Group PPO Plans PPO Plans PPO BRONZE HSA 6500 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 Plan MMO VSP Plan Page last updated on 10/26/2026