Just go to the hospital yourself asap, they will send you a bill afterwards , send that to Police and do take whatever offer you get since you are legal nothing to worry. If no one helps you with your medical bill , negotiate to your Hospital, they will work and adjust it. sometimes you pay $ 0. Keep on helping police and save all the important details of the Incident & investigation. Consult an immigration lawyer after you get well about your chance of filing U Visas.

Hope this helps !!