Before you choose a Medicare drug plan, it is helpful to gather some information about yourself. You need information about any prescription drug coverage you may currently have as well as a list of the prescription drugs and doses you currently take. You should also gather any notice you received from Medicare, Social Security, or your current Medicare drug plan about changes to your plan.
If you have prescription drug coverage, you need to find out whether it is creditable prescription drug coverage. Your current insurer or plan provider will let you know. If you haven’t heard from them, call your insurer, plan provider, or benefits administrator to find out.

