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 Paul McCrane Robert Romano Actor, Director Ming-Na Wen Actor Sherry Stringfield Dr. Susan Lewis Actor Sharif Atkins Actor Mekhi Phifer Dr. Gregory Pratt Actor Linda Cardellini Nurse Samantha Taggart Guest Star Abraham Benrubi Jerry Markovic Guest Star Parminder Nagra Dr. Neela Rasgotra Guest Star Laura Cerón Nurse Chuny Marquez Guest Star Thandiwe Newton Makemba 'Kem' Likasu Guest Star Deezer D Nurse Malik McGrath Guest Star Troy Evans Frank Martin Guest Star Scott Grimes Dr. Archie Morris Guest Star Yvette Freeman Nurse Haleh Adams Guest Star Montae Russell Dwight Zadro Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer