in order of appearance

• 1/27/03 Thomas Fogarty
• 2/10/03 Julio Palmaz
• 3/3/03 John Simpson
• 4/14/03 Rodney Perkins

• 2/02/04 John Abele
• 3/01/04 Eberhard Grube
• 4/19/04 Simon Stertzer
• 4/28/04 Mir Imran
• 5/12/04 Michael Lesh
• 5/27/04 William New

• 2/9/05 James R. Tobin
• 3/21/05 Ronald W. Dollens
• 4/4/05 Guy J. Lebeau
• 5/9/05 William A. Hawkins
  

• 2/6/06 Karen Talmadge
• 3/6/06 Richard Stack
• 5/23/06 Michael Mussallem
• 6/9/06 Rick Gonzalez
  

• 3/5/07 Frank Litvack

• 4/3/07 Michael Baker

• 4/24/07 Steve Oesterle

• 5/21/07 Steve MacMillan

• 11/13/07 Dean Kamen

• 3/13/08 John Capek

• 4/15/08 David Auth

• 5/29/08 Frederic Moll

• 3/10/09 Hira Thapliyal

• 4/1/09 Fred Khosravi

• 5/27/09 David Dvorak

• 2/10/10 Robert Langer
  

• 3/30/10 Lonnie Smith

• 4/21/10 Rich Meelia

• 3/1/11 The Foundry
  (Allan Will, Hank Plain, Mark Deem, Hanson Gifford)
  

• 5/10/11 Ezekiel Emanuel

• 3/14/12 Alex Gorsky

• 4/9/12 Michael Kaschke

• 5/10/12 The Fischells

• 5/30/12 Marty Leon
  (due to recording errors, only first 23 minutes)
  

• 3/4/13 Ferolyn Powell & Fred St. Goar

• 4/8/13 Howard Levin & Mark Gelfand

• 4/23/13 Omar Ishrak

• 6/17/13 John Dineen

Season 12 (2013-2014)

• 3/24/14 Andre Michel Ballester

• 5/12/14 Stanton Rowe, Stan Rabinovich

Season 13 (2014-2015)

• 3/23/15 Eric Topol

• 5/4/15 Timothy Ring