Guest Stars Marcus Giamatti as Artie Sneed Alisha Boe as Grace Clarke Nancy De Mayo as FBI Agent Jessica Tuck as Dr. Giana Luca Lauren Stamile as Dr. Colleen Marks Colleen Foy as Paramedic Huntington Daly as Crash Team Nurse Mark Atteberry as Male Doctor Andrew Lukich as Mike Mullen Lucas Kwan Peterson as Young Male Nurse Craig Rhodes as Security Guard Shaan Sharma as Doctor # 2 Katie Roberts as Nurse # 2 Nathan Pelle as Thomas Knight Natisha Anderson as Nurse # 1
