If you have full coverage from your state Medicaid program and you are eligible for Medicare, Medicare will automatically enroll you in Medicare prescription drug coverage if you have not already chosen to do so. Medicare, not Medicaid, will provide your drug coverage and start paying for your prescription drugs. Medicaid will still cover other care that Medicare doesn’t cover. In some limited cases, Medicaid will add to Medicare drug coverage. You can switch to another Medicare drug plan each month.
Medicare pays for almost all of the cost of your covered drugs if you join a Medicare Prescription Drug Plan or a Medicare Advantage Plan with Medicare prescription drug coverage. In most cases, you will pay only a small amount out-of-pocket for each covered prescription. Your costs and the drugs that are covered vary by plan.
If you have Medicare and full coverage from Medicaid, and you live in certain institutions (like a nursing home), you will pay nothing for your covered prescription drugs.