@cholash This is a very appropriate question at this time of year, since this is the season for choosing plans for 2027.
I do not use Brinsupri, but I had a problem with Part D coverage for a couple meds in the past. At open season, I called each Medicare Part D provider I was considering to find out how one would go about getting coverage for the specific medications. (As a retiree, I have access to my former employer's plans for my Medicare supplement, and each had their own Part D provider options.) I had to call several places - a lot of work, but in the end, all of my medications are covered - some with relatively high co-pays, but I factored that in to my total medical costs for the year. So for the rest of this year, my Rx are all free because I hit the cap.

Now, with all the news about limitations and changes, I will repeat this exercise to include all of our prescriptions. In addition, I must look at the main plan carefully because I have arthritis and often have orthopedic surgeries, these require ongoing physical therapy. My current plan allows 50 visits per year, and I come close to requiring that many. I will read the plan carefully to be sure this isn't reduced.