Physician’s Profile
Profile image of Lloyd E. Ratner, MD

Lloyd E. Ratner, MD

Director, Renal and Pancreatic Transplantation, Department of Surgery


Dialysis Access Procedures
Kidney Transplant Surgery
Kidney Transplantation
Laparoscopic Living Donor Nephrectomy
Living Donor Transplantation
Organ Transplant, Pediatric
Pancreas Transplantation
Pediatric Kidney Transplantation
Pediatric Surgery
Renal Transplant
Transplant Surgery


Dr. Ratner is Professor of Surgery and Director of Renal and Pancreatic Transplantation at Columbia University. Prior to joining the faculty at Columbia, Dr. Ratner was on the faculty of Johns Hopkins University in Baltimore, and served as the Chief of Solid Organ Transplantation at Thomas Jefferson University in Philadelphia.

Access to organ transplantation has been Dr. Ratner’s major academic interest. Dr. Ratner has been a leading innovator in transplantation for over two decades. In 1993, he performed the world’s first dual renal transplant. In 1995 (with Dr. Louis Kavoussi) he performed the first laparoscopic donor nephrectomy, and set the stage for its widespread adoption, which resulted in a profound increase in living donor kidney transplantation. Dr. Ratner has made significant contributions in overcoming immunologic incompatibilities that prohibited transplantation. He devised the plasmapheresis/IVIg protocol for alloantibody desensitization in 1998. In 2001, Dr. Ratner orchestrated the second paired-kidney exchange in the U.S. Subsequently, he arranged the first paired kidney exchanges in both Pennsylvania and New York. More recently Dr. Ratner has been a leading proponent of including compatible donor/recipient pairs in kidney exchanges. And, his more contemporary work has looked at the organizational and regulatory barriers to access to care. All of these strategies have increased organ availability and access to transplantation. Additionally, he has made important contributions to improve living donor safety. For his work, Dr. Ratner has received numerous awards and honors. And, he has been invited to speak and operate at various venues around the world.

Dr. Ratner has authored or co-authored over 200 peer-reviewed publications, and has been a federally funded investigator. His publications have been cited over 15,000 times. He served as the Chairman of the Board of Directors of the LiveOnNY (formerly the New York Organ Donor Network), and has served on numerous national committees including the Board of the United Network for Organ Sharing. He recently completed a term as the President of the American Society of Transplant Surgeons, and previously served as that Society’s Treasurer. He has also served on the UNOS Board of Directors.

Dr. Ratner originally hails from Brooklyn, NY. He received his undergraduate education at the State University of New York at Buffalo. He received his M.D. from Hahnemann University. His general surgery training was obtained at Long Island Jewish Medical Center. He completed a Fellowship in Transplantation Surgery and Immunology at Washington University. In 2011 Dr. Ratner completed a Master of Public Health with a focus on health care policy, administration and management.


2005~2020 Castle Connolly, “Top Doctors New York Metro Area – Surgery”

2019 President, American Society of Transplant Surgeons

2019 Dr. Andre Crotti Award for Distinguished Service to the Profession of Surgery, International College of Surgeons

2019 Honorary Fellow, International College of Surgeons

2018 Chimera Chronicles (video-taped oral history project), American Society of Transplant Surgeons

2016 Academy of Clinical Mentoring and Excellence, Columbia University Medical Center

2009 Transplant Recipients International Organization (Manhattan Chapter) – Triangle Award Honoree

2009 Drexel University College of Medicine Alumni Association Outstanding Clinician Award

2007 New York Resident Magazine, “New York’s Top Doctors”-Surgery

2006 National Medical Award in Transplantation, Kidney and Urology Foundation of America

2006 Residents’ Teaching Award, Department of Surgery, Columbia University

2006 Best Abstract: Quality Assurance/Improvement, UNOS 14th Annual Transplant Management Forum, San Francisco, CA

2004 Elpis Service Award, Nephcure Foundation

2002 Philadelphia Magazine, “Top Docs” – Renal and Pancreatic Transplantation


Living donor kidney transplantation
Overcoming humoral immune responses
Increasing the organ supply
Minimally invasive surgery
Avoidance of surgical complications


Kudose S, Batal I, Santoriello D, Xu K,Barasch J, Peleg Y, Canetta P, Ratner LE, Gharavi A, Stokes MB, Markowitz GS, D’Agati VD: Kidney biopsy findings in patients with COVID19 infection. JASN 2020,

Brennan C, Sandoval PR, Husain SA, King KL, Dube GK, Tsapepas D, Mohan S, Ratner LE: Impact of warm ischemia time on outcomes for kidneys donated after cardiac death post-KAS. Clin Transplantation 2020, July12,

Dube GK, Husain SA, McCune KR, Sandoval PR, Ratner LE, Cohen DJ: COVID19 infection in pancreas transplant recipients. Trans Inf Dis 2020, e1335

Husain SA, Chang JH, Cohen DJ, Crew RJ, Dube GK, Fernandez HE, Morris HK, Aaron JG, Miko BA, Pereira MR, Hardy MA, McCune KR, Ratner LE, Sandoval PR, Weiner J, Tsapepas D, Mohan S: Early Description of Coronavirus 2019 Disease in Kidney Transplant Recipients in New York. J Am Soc Nephrol 2020, 31(6):1150-1156.

Yu K, King K, Husain SA, Dube GK, Stevens JS, Ratner LE, Cooper M, Parikh CR, Mohan S: Kidney nonprocurement in solid organ donors in the United States. Am J Transplant 2020 May, (epub ahead of print doi:10.1111/ajt.15952

Pereira MR, Mohan S, Cohen DJ, Husain SA, Dube GK, Ratner LE, Arcasoy S, Aversa MM, Benvenuto LJ, Dadhani D, Kapur S, Dove LM, Brown RS, Rosenblatt RE, Samstein B, Uriel N, Farr MA, Satlin M, Small CB, Walsh T, Kodiyanplakkal RP, Miko BA, Aaron JG, Tsapepas DS, Emond JC, Verna EC: COVID-19 in solid organ transplant recipients: initial report from the US epicenter. Am J Transplant 2020, (epub ahead of print doi:10.1111/AJT.15941)

Batal I, Vasilescu ER, Dadhania DM, Adel AA, Husain SA, Avasare R, Serban G, Santoriello D, Khairallah P, Patel A, Moritz MJ, Latulippe E, Riopel J, Khallout K, Swanson J, Bomback AS, Mohan S, Ratner L, Radhakrishnan J, Cohen DJ, Appel GB, Stokes MB, Markowitz GS, Seshan SV, DeSerres SA, Andeen N, Loupy A, Kiryluk K, D’Agati VD: Association of HLA typing and alloimmunity with posttransplantation membranous nephropathy: a multicenter case series. Am J Kid Dis 2020, (epud ahead of print doi 10.1053/j. ajkd.2020.01.009)

Jackson KR, Long J, Motter J, Bowring MG, Chen J, Waldram MM, Orandi BJ, Montgomery RA, Stegall MD, Jordan SC, Benedetti E, Dunn TB, Ratner LE, Kapur S, Pelletier RP, Roberts JP, Melcher ML, Singh P, Sudan DL, Posner MP, El-Amm JM, Shapiro R, Cooper M, Verbesey, Lipkowitz GS, Rees MA, Marsh CL, Sankari BR, Gerber DA, Wellen J, Bozorgzadeh A, Gaber AO, Herer E, Weng FL, Djamali A, Helderman JH, Concepcion BP, Brayman KL, Oberholzer J, Kozlowski T, Covarrubias K, Desai N, Massie AB, Segev DL, Garonzik-Wang J: Center-level variation in HLA-incompatible living donor kidney transplantation outcomes. Transplantation 2020, (epub ahead of print March 30).

Rice TC, Kassam AF, Lewis HV, Hobeika M, Cuffy MC, Ratner LE, Diwan TS: Changing education paradigms: training transplant fellows for high stake procedures. J Surg Ed 2020, (epub ahead of print Feb 14).

Smith M, Lazar A, Morrissey N, Ratner L: Laparoscopic nephrectomy with ex vivo repair of aneurysm and autotransplantation. J Vasc Surg Cases and Innovative Tech 2020, 6(1):24-26

Husain SA, King KL, Batal I, Dube GK, Hall IE, Brennan C, Stokes MB, Crew RJ, Carpenter D, Verduzco HA, Rosen R, Coley S, Campenot E, Santoriello D, Perotte A, Natarajan K, D’Agati VD, Cohen D, Ratner LE, Markowitz G, Mohan S: Reproducibility of deceased donor procurement biopsies. CJASN 2020, Feb; 15(2):257-264. (epub ahead of print) doi:10.2215/CJN.09170819

Diwan TS, Lee TC, Nagai S, Benedetti E, Posselt A, Bumgardner G, Noria S, Whitson BA, Ratner L, Mason D, Friedman J, Woodside KJ, Heimbach J: Obesity, Transplantation, and Bariatric Surgery: An evolving solution for a growing epidemic. Am J Transplant 2020 (epub ahead of print) doi:10.1111/AJT.15784.