Do not call his insurance company, DO NOT MAKE A STATEMENT.
Go to your doctor if you have not already.
You will not be dealing with his agent. Agent do not handle claims.
You will get a telephone call soon from a guy wanting to be your friend ( how you doing pal ), he is a insurance investigator, and he will be recording your telephone call for court. Even if nothing every goes on with injury you could have sustained tell him you do not want to make a statement at this time. Tell him you are getting into your doctor. If he asks how your doing tell him you do not want to talk about that. If he wants to know tell him to talk to your doctor when he writes a report. Your doctor will never talk to him any how. Keep a log of everything that goes on.
Next you will get a second call from a guy who is a insurance appraise, and he deals only in auto repair claim. Tell him where it can be viewed, and then stay away from him also. If he does not call you with in a day call him ask what are we doing about your ride. Remember do not get to upset when they drag their feet getting your bike repaired. In most states they have 60 days, and trust me it will take that long. If you do not like a offer the make you, tell them what you want. Lets say $12,000, and you keep the bike which you will part out making a extra 5-6 thousand dollars. That is what they will do with your bike. Give you lets say $12,000, and sell it for $4000 to a used part wholesale.
Go through his insurance only not yours. His insurance will provide a nice deal on the bike , and not harm your insurance rating as well.
Lets say you did get hurt at all make sure you follow your doctors orders, and get better. If you hurt do not be a tough guy. It does no good. If you hurt at all talk to your doctor about it, and no one else. There is only one person to trust, and that is your doctor.
You will be getting letters from a dozen Lawyers also. Throw those in a pile for starting a camp fire. If you feel some damage to yourself happen that can take time to heal, and may never be right again you have a statue on limitation which varies state to state so you will want to look that up on the web.
You can settle all property damage yourself, and any medical claims with out a lawyer. If you start getting screwed then you will have to get a lawyer but do not hire the first one you talk to. Use each one you interview to learn what is really going on. Lawyers are in the biz to screw people even their own client.
Hope you feel better, and thank god you did not get killed.