Dr. Goff is the phycologist that Keira went to visit early on in the book and Draven possessed him so that he could get to know more about her. She, later on, runs into him at the grocery store and he doesn’t recognize her and she is confused as to why.
Of course, we later find out it’s because Dominic Draven was in control of his body and mind at the time.
Doctor Goff was a middle-aged man with a full beard that had a mixture of ginger and grey bits in it. He wore small glasses and looked like your typical shrink.