Characters played by Felicity Huffman
Dr. Liza Peck
Characters played by Tony Shalhoub
Dr. Joseph Nassar
Characters played by John Larroquette
Dr. Fred Biskin
Characters played by Mark Feuerstein
William 'Bump' Daley
Characters played by Emily Deschanel
Maude Allyn
Characters played by Lindsay Price
Juliet Lee
Characters played by Elena Evangelo
Stacey Calhoun
Characters played by Kristoffer Ryan Winters
Mark Ryan
Characters played by Simon Templeman
Doug
Characters played by Caryn Ward
Shondra Adaire
Characters played by Pamella D'Pella
Tanya Adaire
Characters played by Anthony Quon
Boy
Characters played by Frank Cassini
Mr. Costain
Characters played by Douglas Newell
Dr. Gale
Characters played by Andrew Johnston
Doctor #1
Characters played by Donna Yamamoto
Doctor #2
Characters played by Brenda Crichlow
Doctor #3
Characters played by Jerry Wasserman
Doctor #4
Characters played by Beverley Elliott
Nurse #1
Characters played by Jenny Mitchell
Nurse #2
Characters played by Jennifer Spence
Nurse #3
Characters played by Jayme Knox
Nurse #4
Characters played by Karin Konoval
Receptionist
Characters played by Veena Sood
Anesthesiologist
Characters played by Rondel Reynoldson
Female Orderly
Characters played by Darrell Lee-Izeard
Delivery Guy
Characters played by Mar Andersons
Flannery
Characters played by Phillip Mitchell
Josh Baumgarten
Characters played by Suzin Schiff
Transplant Nurse
Characters played by Jillian Fargey
Mark's Sister
Characters played by C. Ernst Harth
Orderly
Characters played by Julia Arkos
Resident
Characters played by Ryan Silverman
Telegram Boy
Characters played by Linden Banks
Surgeon
Characters played by Susan Bain
Nurse #5