Guest Stars Yoshié Bancroft as Nurse Sunny Christine Willes as E.R. Nurse Harry Lennix as Tim Dupre Mark Ghanimé as Dr. Jamie Albagetti Catherine Barroll as Joyce Barnes Michelle Harrison as Jessica Theresa Wong as O.R. Nurse Camille Atebe as O.R. Nurse Hiro Kanagawa as Dr. Nobu Chiba Chris Coy as Conor McCall Tanya Clarke as Karen Ballard Marcus Coloma as P.O. Rick Malone Lane Edwards as Luke Ballard Sean Michael Kyer as Sam Ballard Zahf Paroo as Dr. Asad Tauana Shaine Jones as Anesthesiologist Eva Bourne as Tracy Ballard