You can find out who you owe money to by looking at your credit report and collecting all of the bills that are sent to you. It is a good idea to start saving bills a couple of months before filing bankruptcy to be sure that all of your creditors are included. If you become aware of more creditors after the bankruptcy is filed there are options for including them. Medical bills are tricky and often do not show up on a credit report. Try to remember any medical providers that you have had to make sure that they are included.