Mark L. Barr

Expert in heart and lung transplantation

Director, cardiothoracic surgical research, Keck School of Medicine of USC

Co-director, cardiothoracic transplantation

Associate professor of cardiothoracic surgery


  • cardiopulmonary (heart and lung) transplantation
  • experimental and clinical immunosuppression
  • cross-species transplantation
  • xenograft surgery and immunology
  • organ preservation for cardiothoracic transplantation
  • mechanical hearts and cardiac assist devices
  • photopheresis – ultraviolet A irradiation plus photoactivatible drugs

Additional Information

  • Member, board of directors, International Society of Heart and Lung Transplantation
  • Listed in The Best Doctors in America: Pacific Region

Related links