Just a bit of info here most USA states now allow people to have .........both..... Medicaid and medicare at the same time. what happens is which ever one is the primary insurance gets billed first then what they do not pay the other does. when I googled michigan they do have this type of program. its called MI Health Link. here is the information on how to get set up with them and what happens when you are all set up with both your medicaid and medicare at the same time....
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my suggestion is if you want to keep your medicaid contact the MI Health Links number.