Looking for a Consultant

So I am writing a novel in which the main character suffers a TBI. I have been doing extensive research on the subject, but I know that at some point I am going to need a doctor, most likely one who specializes in the brain or TBI’s to consult so that even though it is fiction, the facts are right and it is believable. Is there anyone like that here, or do you know of someone? I figured this would be an interesting place to start.