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 Ming-Na Wen Actor Sherry Stringfield Dr. Susan Lewis Actor Sharif Atkins Actor Mekhi Phifer Dr. Gregory Pratt Actor Linda Cardellini Nurse Samantha Taggart Actor Parminder Nagra Dr. Neela Rasgotra Guest Star Oliver Davis Alex Taggart Guest Star Joy Bryant Valerie Gallant Guest Star Daniel Dae Kim Ken Sung Guest Star Troy Evans Frank Martin Guest Star Yvette Freeman Nurse Haleh Adams Guest Star Shannon Lucio Johanna Lambright Guest Star Wendy Phillips Mrs. Lambright Guest Star John Eric Bentley Larry Anderson Guest Star Niecy Nash Judith Anderson Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer