Just wanted to let you know my recent experience with moving parents from one state to another. They had Medicare coverage and an Advantage supplement, which cost them very little. The Advantage supplemental coverage was state and location specific. This plan was not available at their new location (our home in Oklahoma). It was very scary wondering if their insurance would be unsatisfactory after the move. Most insurance companies will deny new applicants coverage on preexisting conditions.
However, after doing some research, I found out that legally they were entitled to new coverage without being required to answer any medical questions. Certain life events for medicare recipients fall into this category and one is a move to an area where previous coverage is not available, Thankfully, I worked with an insurance agent that went to bat to make this happen. He had to call 10 different people at the Insurance Company before he found the right person that understood this.
Now they have supplement insurance from a reputable company and there are no exclusions to their coverage (which would have been a disaster). they do pay considerably more than in their home state, but comparable to what they paid prior to their state going to the Advantage plan.
My advice is to contact insurance companies that are knowledgeable with Medicare Supplements several months before the move and begin the application process, to insure there is no coverage gap and make certain that none of their illnesses are excluded. I tried working with a so called government help line and it was no help at all, it will be wise to do your own homework. God bless and keep you