• 
  Michael Stahl-David

  Dr. Caleb Tucker
• 
  Omar Maskati

  Dr. Isan M. Shah
• 
  Davi Santos

  Dr. Joey Costa
• 
  Edwin Hodge

  Malcolm A. Kingsley
• 
  Wendy Crewson

  Vivian Katz
• 
  Marium Carvell

  Nurse Donna Williams
• 
  David Huband

  Mr. David Ferguson
• 
  Carlos Albornoz

  Julio Vargas

• 
  Yarine Pernia

  Daisy Vargas
• 
  Samy Osman

  Angry Husband
• 
  Indy Saluja

  E.R. Doctor
• 
  Darla Biccum

  Heart Attack Victim
• 
  Natalia Gracious

  Crash Nurse
• 
  Stephen Tracey

  Tim Davis
• 
  Jason Isaacs

  Dr. Rob 'Griff' Griffith

• 
  Sophia Bush

  Dr. Sam Griffith
• 
  Skye P. Marshall

  Dr. Lex Trulie
• 
  Evan Parke

  Byron Kingsley
• 
  Yanna McIntosh

  Dr. Rhonda Glass
• 
  Douglas E. Hughes

  Bernie
• 
  Sendhil Ramamurthy

  Asher Pyne
• 
  Victoria Rowell

  Tina Kingsley
• 
  Julie Mainville

  ER Nurse
• 
  Pearl Ho

  Nurse Opal Pierce
• 
  Travis Van Winkle

  Dr. Eric Kace