This is a insurance product sold by private insurance companies to fill gaps in original Medicare coverage. You may purchase this gap or supplement insurance at various levels of coverage.
Medicare Advantage Plans
A type of Medicare health plan offered by a private company that contracts with Medicare. They provide all of your Part A and Part B benefits though a HMO, PPO, PFFS of SNP. The Medicare Advantage Plan may also offer prescription drug coverage.
Prescription Drug Plans / Part D
Medicare drug coverage helps pay for prescription drugs you need. It is optional and offered to everyone with Medicare. But if you do not have other credible coverage, you may likely pay a late enrollment penalty.