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 Mekhi Phifer Dr. Gregory Pratt Actor Linda Cardellini Nurse Samantha Taggart Actor Shane West Actor Thandiwe Newton Makemba 'Kem' Likasu Guest Star Eion Bailey Jake Scanlon Guest Star Louise Fletcher Roberta 'Birdie' Chadwick Guest Star Scott Grimes Dr. Archie Morris Guest Star Susan Moncur Fabienne Elmont Guest Star Abraham Benrubi Jerry Markovic Guest Star Deezer D Nurse Malik McGrath Guest Star Troy Evans Frank Martin Guest Star Lily Mariye Nurse Lily Jarvik Guest Star Jordan Calloway K.J. Thibeaux Guest Star Parminder Nagra Dr. Neela Rasgotra Actor John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer