I had his license plate number from the video. All Geico had to do was run his plate. His name, vehicle make/model/year, and insurance info show up in my claim portal for the incident on Geico.com. I used that info when calling his insurance carrier, USAA.Good on you for following through with reporting/repairing. That dude was going to leave you high and dry.
The only thing I am not clear on from this thread is how you are supposed to find the guys insurance company? Call your insurance and hope they will look up the info for you?