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 Sirena Gulamgaus as Amira Hamed Sugith Varughese as Dr. Aajay Singh John Hannah as Dr. Jed Bishop Linda E. Smith as Dr. Wendy Atwater Eddie Guilluame as Lou Patrick Labbé as Dr. Thomas Mitchell Grace Lynn Kung as Vivian Barnes Janine Theriault as Erin Joseph Ryan Bommarito as Charlie Linda Goranson as Lena Joseph Ry Prior as Miles