Noah Wyle Dr. John Carter Actor Laura Innes Dr. Kerry Weaver Actor, Director Alex Kingston Dr. Elizabeth Corday Actor Goran Visnjic Dr. Luka Kovac Actor Maura Tierney Abby Lockhart Actor Ming-Na Wen Actor Sherry Stringfield Dr. Susan Lewis Actor Sharif Atkins Actor Parminder Nagra Dr. Neela Rasgotra Actor Mekhi Phifer Dr. Gregory Pratt Actor Linda Cardellini Nurse Samantha Taggart Actor Jordan Berkow Susannah Guest Star Lisa Vidal Sandy Lopez Guest Star L. Scott Caldwell Dr. Rabb Guest Star Christopher Cousins Kyle Kolber Guest Star Lesley Fera Helen Kolber Guest Star Joanne Baron Virgie Guest Star Yi Ding Mei-Fan Guest Star Tom Parker Matt Gilespie Guest Star Rossif Sutherland Lester Kertzenstein Guest Star Jamison Yang Shuang Tseng Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer