Search my name. I, and another guy (McCrue) both had him. I came from Texas. he trained with Lunsford (Pittsburgh) who is the best GK person. He is an MD PhD and has published ton. Their whole team was MD/PhDs and they were outstanding. Anytime I sent an email, he replied same day, even at night. They also work out of an acoustic neuroma center, which is what you want. You can't go wrong with Sheehan.