Medical Mutual is the oldest and largest health insurer in Ohio. Our headquarters are here and we have offices throughout the state. For 80 years, we've been serving our members and the Ohio communities where they live and work. We strive to be the health insurance choice of Ohioans and help make Ohio the best it can be.
2700 employees. Additional phone - (800) 232-7400, (216) 687-7097, (216)...