No. He is not the victim of ongoing criminal activity as defined in law. Injuries sustained in a car accident, even hit & run, does not qualify.
If he's looking for a visa, he must be an illegal alien. He must return home to his own country. BTW, if he fails to pay all his medical bills in full, he can never return to US. If the driver cannot be found, or is uninsured, he's got to pay whopping bills or become inadmissible. Is it friend or brother (or are you a troll?)? Get him home where medical care is a lot cheaper.