Good injury legal attorneys have many medical "contacts". If needed arrangements can often be made through your attorney allowing you to receive medical care without payment up front (or pay as you go).
This is accomplished by a document called an "Assignment". Both you and your legal attorney sign this document, and thereby agree that the doctor will get paid at the end of your case, from the proceeds recovered.
In this fashion, the doctor is satisfied, because of the attorney's reputation, that the payment will probably be forthcoming. Your legal attorney should tell you that by the signing of this document does not eliminate your responsibility for payment.
