Guest Stars Jim Watson as Dr. Theo Hunter Ayisha Issa as Dr. June Curtis Torri Higginson as Claire Malone Laurence Leboeuf as Dr. Magalie "Mags" Leblanc Kenny Wong as Arnold De Luca Mariah Inger as Rhoda DaSilva Sugith Varughese as Dr. Aajay Singh John Hannah as Dr. Jed Bishop Gord Rand as Dr. Mark Novak Katharine King So as Joanie Kwan Fayçal Azzouz as Khaled Abdullah Ellen David as Dr. Evelyn Roche Gina O. James as Shay Birva Pandya as Siobhan Carlyle David Eisner as Ray Grisholm Jonathan Goad as Duane Clark Olivia Scriven as Haley Hanneke Talbot as Stacey