Mark Lee Barr, MD

Associate Professor of Surgery

Chair for the Department's Appointments, Promotion and Tenure Committee

Director of Cardiac Surgery Clearkship

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Overview

Dr. Mark L. Barr obtained his medical degree from Mount Sinai School of Medicine and completed 10 years of postgraduate residency at New York University and Columbia University, including a 2-year NIH-sponsored research fellowship in transplantation immunology. He is a tenured faculty member in the Department of Surgery and serves as Co-Director of the USC Transplantation Institute; Chair of the Department of Surgery Appointments, Promotions, and Tenure Committee; and Director of the Cardiothoracic Surgery Medical Student Clerkship. He has served as Chair of the UNOS Thoracic Transplantation Committee, as President of the International Society for Heart and Lung Transplantation (ISHLT), as Chair of the Thoracic Committee of the American Society of Transplant Surgeons (ASTS), and on the Board of Directors of the ISHLT, the ASTS, the American Society of Transplantation, and the Board of Directors of the OPTN / UNOS. Dr. Barr was the Chair of the Advisory Committee on Transplantation (ACOT) under the auspices of the Secretary of the Department of Health and Human Services during the 8 years of the Obama administration. He is an author / co-author on more than 150 peer-reviewed publications and book chapters in the fields of cardiothoracic surgery and heart and lung transplantation, has served on multiple scientific review boards for NIAID, NHLBI, and NCRR of the National Institutes of Health, and was a Deputy Editor of the American Journal of Transplantation for 15 years.

Publications

  • An Institutional Comparison of Patients Supported With Surgical vs Percutaneous Biventricular Assist Devices. Ann Thorac Surg. 2025 10; 120(4):779-786.. View in PubMed
  • Evaluation of hemolysis in patients supported with Impella 5.5: a single center experience. J Cardiothorac Surg. 2025 Mar 01; 20(1):143.. View in PubMed
  • An alternative technique in management of recipient left superior vena cava in orthotopic heart transplantation. JTCVS Tech. 2024 Dec; 28:109-111.. View in PubMed
  • The double barrel Impella exchange: A reliable method for uninterrupted mechanical circulatory support. J Heart Lung Transplant. 2024 Dec; 43(12):2031-2035.. View in PubMed
  • Commentary: Lungs across borders: American lungs in Canadian patients. J Thorac Cardiovasc Surg. 2022 12; 164(6):1669-1670.. View in PubMed
  • Early onset of deep sternal wound infection after cardiac surgery is associated with decreased survival: A propensity weighted analysis. J Card Surg. 2021 Dec; 36(12):4509-4518.. View in PubMed
  • Equivalent outcomes with minimally invasive and sternotomy mitral valve repair for degenerative mitral valve disease. J Card Surg. 2021 Aug; 36(8):2636-2643.. View in PubMed
  • Pediatric Living Lung Donor Transplant Candidates: Psychiatric Status of Utilized and Non-Utilized Donors. J Clin Psychol Med Settings. 2022 03; 29(1):62-70.. View in PubMed
  • Use of a Bluetooth tablet-based technology to improve outcomes in lung transplantation: A pilot study. Am J Transplant. 2020 12; 20(12):3649-3657.. View in PubMed
  • Invited Commentary. Ann Thorac Surg. 2018 04; 105(4):1157-1159.. View in PubMed