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 Mekhi Phifer Dr. Gregory Pratt Actor Linda Cardellini Nurse Samantha Taggart Actor Thandiwe Newton Makemba 'Kem' Likasu Guest Star Hallee Hirsh Rachel Greene Guest Star Parminder Nagra Dr. Neela Rasgotra Guest Star Cole Hauser Steve Curtis Guest Star Paul Blackthorne Dr. Jeremy Lawson Guest Star Scott Grimes Dr. Archie Morris Guest Star Abraham Benrubi Jerry Markovic Guest Star Deezer D Nurse Malik McGrath Guest Star Troy Evans Frank Martin Guest Star Montae Russell Dwight Zadro Guest Star Jernard Burks Guest Star Cynthia Cervini Nurse Anna Waldron Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer