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 Gord Rand as Dr. Mark Novak Rekha Sharma as Dr. Neeta Devi Katharine King So as Joanie Kwan Sean Baek as Dr. Andrew Zhang Fiona Highet as Natalia Zach Smadu as Sean Andrew Moodie as Dr. Robitaille Teneisha Collins as Sheila Brian Sills as Harper Katie Nora Walters as Charlotte Roo