Do you have a Medicare Advantage plan or a Medicare Part D Prescription Drug Plan? Here’s how to handle your move to another state.
If you’re enrolled in a Medicare Advantage plan or a Medicare Part D Prescription Drug Plan, a change in residence, such as moving to another state, could qualify you for a Special Election Period (SEP). During your SEP, you’re allowed to enroll into a new plan that is offered in your new service area.
If you decide to permanently move somewhere that’s not covered by your current Medicare plan (that is, outside the plan’s service area), you need to tell your plan immediately. If you notify the plan
before you move, your SEP timeframe is four months long. It begins one month before the month you move and lasts for three more months after that. If you notify your plan
after you move, you can switch plans the month you provided notice of the move and up to two months after that.
You can switch to a new Medicare Advantage plan or Medicare Prescription Drug Plan during this period of moving to a different service area. If you prefer, you can return to Original Medicare.
https://medicare.com/resources/changes-medicare-moving-another-state/
Different plans are offered in different areas depending upon what insurer is in that area; it has nothing to do with the state. Those plans are between Medicare and insurance companies in each area; each insurance company has to comply with state law but they deal with Medicare to set up these plans.
