Is the hospital bill on a credit card?
If so, just shop (creditcards.com, bankrate.com, etc.) for a card with "0% for one year on balance transfers (without a fee)". Hopefully you can pay it off within the timeframe. If the hospital bill is not on a cc, see if the new card is 0% on new purchases, in which case put it on the card if you can or put it on an existing cc, then transfer everything to the (hopefully) new 0% on transfers card.