Are Jason Gray-Stanford and Patrick O'Bryan the same person?

I just seen 976-EVIL tonight and Patrick O'Bryan who played Spike looked a whole lot like Jason Gray-Stanford who plays Lt. Randy Disher on the hit USA Network TV Series Monk. I've surfed websites and looked for pictures of Jason Grey-Stanford around 1987-1992. Jason has done some voice work around the time of Patrick's career. Patrick's career spanned from 1987-1992. Patrick's last movie was in 1992 (976-EVIL II). Do you think they look similar? Are Jason Gray-Stanford and Patrick O'Bryan the same person? Please let me know what you think.