When I had iv amikacin my id doctor arranged it through a research pharmacy so it was paid differently. So there are ways not to pay for it but I think the doctor has to be resourceful and willing to help. My id doctor was like that. On the other hand my pulmonologist is passive and was very surprised I was prescribed a vest during my NJH visit and my insurance paid for it. She still thinks I did not qualify- it’s just good will or lack of it.