Noah Wyle Dr. John Carter Actor Laura Innes Dr. Kerry Weaver Actor Alex Kingston Dr. Elizabeth Corday Actor Goran Visnjic Dr. Luka Kovac Actor Maura Tierney Abby Lockhart Actor Sherry Stringfield Dr. Susan Lewis Actor Ming-Na Wen Actor Mekhi Phifer Dr. Gregory Pratt Actor Linda Cardellini Nurse Samantha Taggart Actor Shane West Actor Parminder Nagra Dr. Neela Rasgotra Guest Star Mädchen Amick Wendall Meade Guest Star Leland Orser Dr. Lucien Dubenko Guest Star John Aylward Dr. Donald Anspaugh Guest Star Sam Anderson Dr. Jack Kayson Guest Star Abraham Benrubi Jerry Markovic Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Oliver Davis Alex Taggart Guest Star Deidrie Henry Nichelle Richardson Guest Star Brian Lester Brian Dumar Guest Star Andy Powers Dr. Howard Ritzke Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer