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 Paul McCrane Robert Romano Actor Ming-Na Wen Actor Sherry Stringfield Dr. Susan Lewis Actor Mekhi Phifer Dr. Gregory Pratt Actor Sharif Atkins Actor Shirley Knight Mrs. Burke Guest Star Marcello Thedford Leon Guest Star Tom Everett Scott Eric Wyczenski Guest Star Lee Tergesen Demerol Junkie Guest Star Laura Cerón Guest Star Deezer D Nurse Malik McGrath Guest Star Troy Evans Frank Martin Guest Star Montae Russell Dwight Zadro Guest Star Diane Delano Stella Willis Guest Star Gina Philips ER Nurse Kathy Guest Star John Wells Executive Producer Michael Crichton Executive Producer Neal Baer Executive Producer Jack Orman Executive Producer