the odds are he will receive a notice in the mail to go to court. were the police called? what circumstance required the trip to the hospital? how was he transported to the hospital?
the fact that i have posted an answer to your question or commented on another's answer does not create an attorney-client relationship between us.
You've been given good advice by these prior attorneys, he will probably need to hire a local criminal attorney bc he will probably be charged with a crime