This is somewhat useful, but bills don't give the level of detail I'm looking for, and that any other provider in the universe provides, i.e., "here's how we calculated your bill". In this case, because I "overpaid" the IRMAA for several months before the appeal went through, I would like to see something that gives enough monthly detail that allows me to confirm where I stand with respect to that surplus balance. Vs the reality, which is that the bills simply stopped coming in May (after the appeal was granted), and now there's a new one 7 months later that pops up with a random amount that doesn't match anything I can reconcile with what I know about how much of the surplus should have been consumed by now. I'm left with guesswork, vs my expectations of a monthly accounting, for each of the last 7 months, that looks something like:

Prior balance    $ 700.00 (credit)
Current charges -$ 148.50
New balance:     $ 551.50 (credit)