Go to the police station that is local to were the incident occurred… If you know his name if their nice at the police station they can look up his name and find his license information. If theirs more then one person by that name they will show you a pic that’s on his license and if you remember his appearance that way you can verify that it is him. In that way they can find his license # and address. Police will also call him for you and maybe arrange a time for you and him to meet within the police station. When he comes to the police station he will be forced to give you the correct information or he will be fined maybe arrested.
That’s what I did when someone gave me fake information. All i had was fake insurance info his real name and phone number. Didn’t get his license or anything.
edit-if he doesn’t have any insurance after you go through the police step that i mentioned above you may sue him to get reimbursement for you damages. But first do that cop step.