Medicare, Medicaid, and often times federal grants. You'd have to have a lot of private donors with deep deep pockets to keep running, I believe.
Medicaid goes through the state, the state gets reimbursed. Not sure if that gets affected the same way. But either way I can't imagine a hospital used to receiving that money surviving the loss of it.
__________________
From the SigmaTo the K!
Polyamorous, Pansexual and Proud of it! It Gets Better