It is a private medical insurance company with 1.3 million medicare members. Who provide coverage include Medicare benefits, advantage plans, prescription drugs, supplement plans etc.

Medicare Advantage 

hospital, medical, prescription drug and other facilities are included in Coventry Health Care plans.

Part D

Coventry Health Care provides prescription drug plans coverage and medication costs.

Supplements

Aetna provides prescription drug plans and coverage which include medication costs, medigap, pays and deductibles.