Hi Irene - No one can answer your question about which Part D plan will cover Brinsupri at this point. It is not yet on the formularies, and won't be added until they do the new ones for 2026.

Even then, most new, specialty drugs don't show up there - they are covered by "exception" - you need to go through an approval process.

This is what I mean - I have what many docs describe as a "golden" plan - Medicare Primary backed by my former employer's Blue Cross Blue Shield as secondary coverage (We pay $7000/year in premiums + Medicare B premiums for this.) Even they make us jump through hoops for every biologic and most newer proprietary (name brand) drugs. But I feel fortunate - once we get approved, our drug costs are "capped" by Part D at $2000 each - our copays get us there by November.

What I suggest is to contact Insmed to find out which companies have been most proactive in working with them.