• 
  Stanley Tucci

  dr. Douglas Hanson
• 
  Mark Feuerstein

  Dr. Jonathan Seger
• 
  Indira Varma

  dr. Adrianne Holland
• 
  Deena Dill

  Beth Cole (1 episode, 2006)
• 
  Celia Weston

  Tilly Bates (1 episode, 2006)
• 
  Ashlie Atkinson

  Nurse Rhonda  (2 episodes, 2006)
• 
  Maggie Siff

  Lisa Ketchum (1 episode, 2006)
• 
  Max Arciniega

  Jose (2 episodes, 2006)

• 
  Sidné Anderson

  Lois (1 episode, 2006)
• 
  Justin Bruening

  Personl trainer (1 episode, 2006)
• 
  Tamara Taylor

  Della (1 episode, 2006)
• 
  Dylan McDermott

  dr. Douglas Hanson
• 
  Griffin Dunne

  Dr. Jerry Cole (2 episodes, 2006)
• 
  Marc John Jefferies

  Adam (1 episode, 2006)
• 
  Jack Gilpin

  Dr. Wardell (1 episode, 2006)

• 
  Catrina Villani

  School Girl (1 episode)
• 
  Audra Blaser

  Deborah Rivers (1 episode, 2006)
• 
  Jessica Hecht

  Rebecca Ellis (1 episode, 2006)
• 
  Nick Offerman

  Dr. Coffey (1 episode, 2006)
• 
  Gloria Garayua

  Lucy Canet (1 episode, 2006)
• 
  Reiko Aylesworth

  Dr. Adrienne Holland (1 episode)
• 
  Lorraine Toussaint

  Della (1 episode)
• 
  Claire Lautier

  Guest Lead (1 episode, 2006)
• 
  Steve Braun

  Otis Wills (1 episode, 2006)
• 
  Madeline Zima

  Cassie Mack (1 episode, 2006)
• 
  Armando Riesco

  Dr. Tom Flores (7 episodes, 2006)
• 
  Karl Bury

  Matt Ketchum (1 episode, 2006)
• 
  Ken Wharton

  Hospital Administrator (8 episodes, 2006)
• 
  Julia Campbell

  Roberta Mack (1 episode, 2006)
• 
  Juliette Goglia

  Erica Lund (1 episode, 2006)
• 
  Molly Bryant

  Nurse Joanne (2 episodes, 2006)
• 
  Mark Hammer

  Old Man (1 episode, 2006)
• 
  Kate Jennings Grant

  Kristen Lund (1 episode, 2006)
• 
  Ned Eisenberg

  Brad Ellis (1 episode, 2006)
• 
  Joshua Funk

  O'Malley (1 episode)
• 
  Cynthia Nixon

  Dr. Karin Hanson (3 episodes, 2006)
• 
  James McCaffrey

  Eric Lund (1 episode, 2006)
• 
  Petrea Burchard

   O.R. Nurse (2 episodes, 2006)
• 
  Liz Burnette

   Anesthesiologist (2 episodes, 2006)
• 
  Cyrus Farmer

   Isaiah (3 episodes, 2006)
• 
  Linda Maurel-Sithole

   Kathleen / ... (2 episodes, 2006)
• 
  Malachi Weir

  Eddie
• 
  Jennifer Ferrin

   Penny Marx (2 episodes, 2006)
• 
  Zabryna Guevara

   Melania Ortiz (6 episodes, 2006)
• 
  Eleanor Seigler

   Nurse Melissa (2 episodes, 2006)
• 
  January LaVoy

   MRI tech Eileen (2 episodes, 2006)
• 
  Addison Timlin

   Charlotte Hanson (3 episodes, 2006)
• 
  Jordan Carlos

   Intern (2 episodes, 2006)
• 
  Jerzy Gwiazdowski

   Male Student (2 episodes, 2006)
• 
  David Lawrence Brown

• 
  Peter Ocko

  producător