Dr. Neil Roberts is a fictional character on the FOX series, The O.C., portrayed by Michael Nouri.A plastic surgeon in wealthy Newport Beach, California, Neil is the father of Summer Roberts. He was married to Summer's mother until his daughter was 13 years old, when Summer's mother left for unexplained reasons. This was at the time that Luke Ward had his 13th birthday party, which also when Seth had his Bar Mitzvah.