first off he needs to call the doctor's office and get a copy of the bill and then call his insurance company and get a copy of the Explanation of Benefits. While he is on the phone with the insurance company, he needs to tell them that all Explanation of Benefits need to come directly to him since he is the policy holder and make sure they have his address etc right. This way he will know of all claims filed and then know about bills outstanding.
Then he needs to make sure the bill was covered correctly. If the bill is $2000 I am thinking this must've been a very major procedure unless insurance didn't cover it for some reason. He may be able to get that sorted out and covered by the insurance.
As for who pays what, it is something he needs to give to his attorney to be added to the court proceedings. It may end up that they have to split but I don't know if anything can be done about the judgement. Only his attorney can answer that one.
Then he needs to make sure the bill was covered correctly. If the bill is $2000 I am thinking this must've been a very major procedure unless insurance didn't cover it for some reason. He may be able to get that sorted out and covered by the insurance.
As for who pays what, it is something he needs to give to his attorney to be added to the court proceedings. It may end up that they have to split but I don't know if anything can be done about the judgement. Only his attorney can answer that one.