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 Parminder Nagra Dr. Neela Rasgotra Actor Mekhi Phifer Dr. Gregory Pratt Actor Linda Cardellini Nurse Samantha Taggart Actor Paul Blackthorne Dr. Jeremy Lawson Guest Star Sam Anderson Dr. Jack Kayson Guest Star Steven Culp Dave Spencer Guest Star Simone-Elise Girard Gillian Guest Star Scott Grimes Dr. Archie Morris Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Troy Evans Frank Martin Guest Star Jessica Chastain Dahlia Taslitz Guest Star Rossif Sutherland Lester Kertzenstein Guest Star Khleo Thomas Brian Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer