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Bernard Georges Jaar, M.D.

Bernard Georges Jaar, M.D.

Headshot of Bernard Georges Jaar
  • Assistant Professor of Medicine

Languages: English, French



Research Interests

Epidemiology of Chronic Kidney Disease, survival in dialysis patients, peripheral vascular disease, lead nephropathy more

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The Johns Hopkins Hospital

Appointment Phone: 410-955-0670
600 N. Wolfe Street
Sheikh Zayed Tower Suite 416
Baltimore, MD 21287 map
Phone: 410-955-5268

Johns Hopkins Outpatient Center

Appointment Phone: 410-955-0670
601 N. Caroline St.
Baltimore, MD 21287 map


Dr. Bernard Jaar is an assistant professor of medicine at the Johns Hopkins University School of Medicine. He holds a joint appointment in epidemiology at the Johns Hopkins Bloomberg School of Public Health. His areas of clinical expertise include nephrology and chronic renal failure. 

Dr. Jaar earned his M.D. from Faculte de Medecine et de Pharmacie. He completed a nephrology residency at Tenon Hospital and an internal medicine residency at Graduate Hospital. He performed a fellowship at UFR de Medecine Saint-Antoine, a fellowship in epidemiology at the Johns Hopkins Bloomberg School of Public of Health, and a fellowship in nephrology at Johns Hopkins. 

His research interests include epidemiology of chronic kidney disease, survival in dialysis patients, peripheral vascular disease and lead nephropathy.

Dr. Jaar was recognized by the National Kidney Foundation of Maryland with a Volunteer of the Year Award in 2013. He is a member of several professional organizations, including the International Society of Nephrology, American Society of Nephrology and the American Medical Association. more


  • Assistant Professor of Medicine

Departments / Divisions

Centers & Institutes



  • MD; Faculte De Medecine Et De Pharmacie (1987)


  • Internal Medicine; Graduate Hospital (2000)
  • Nephrology; Paris Institute of Political Studies - Sciences Po (1992)


  • Epidemiology; Johns Hopkins Bloomberg School of Public Health (1997)
  • Nephrology; Johns Hopkins University School of Medicine (2002)
  • UFR de Medecine Saint-Antoine (1993)

Board Certifications

  • American Board of Internal Medicine (Nephrology) (2004)

Research & Publications

Research Summary

Dr. Jaar is interested in the conduct of epidemiologic studies in the field of end-stage renal disease and its related complications. His personal research interest is currently focused on outcome studies of peripheral arterial disease (PAD) in end-stage renal disease (ESRD) patients and morbidity and mortality of ESRD patients by dialysis modality. In addition to leading the Cardiovascular Endpoint Committee of the CHOICE study, he is involved in several research projects within the Division of Nephrology and also at the Welch Center for Prevention, Epidemiology and Clinical Research, and the Department of Environmental Health at the School of Public Health.

Clinical Trials

Providing Resources to Enhance Patients' Readiness to Make Decisions About Kidney Disease: The PREPARE NOW Study (PREPARE NOW)

Selected Publications

Abougergi M, Broor A, Cui W, Jaar BG. “Intravenous immunoglobulin for the treatment of severe Clostridium difficile colitis: an observational study and review of the literature.” J Hosp Med. 2010 Jan;5(1):E1-9. doi: 10.1002/jhm.542.

Plantinga LC, Fink NE, Coresh J, Sozio SM, Parekh RS, Melamed ML, Powe NR, Jaar BG. “Peripheral vascular disease-related procedures in dialysis patients: predictors and prognosis.” Clin J Am Soc Nephrol. 2009 Oct;4(10):1637-1645.

Navas-Acien A, Tellez-Plaza M, Guallar E, Muntner P, Silbergeld E, Jaar B, Weaver V. “Blood cadmium and lead and chronic kidney disease in us adults: a joint analysis.” Am J Epidemiol. 2009 Nov 1;170(9):1156-64. doi: 10.1093/aje/kwp248. Epub 2009 Aug 21.

Sozio SM, MD, Armstrong PA, Coresh J, Jaar BG, Fink NE, Plantinga LC, Powe NR, Parekh RS. “Cerebrovascular disease incidence, characteristics, and outcomes in patients initiating dialysis: the choices for healthy outcomes in caring for ESRD (CHOICE) study.” Am J Kidney Dis. 2009 Sep;54(3):468-77. doi: 10.1053/j.ajkd.2009.01.261. Epub 2009 Apr 19.

Sperati CJ, Parekh RS, Berthier-Schaad Y, Jaar BG, Plantinga L, Fink N, Powe N, Smith MW, Coresh J, Kao WHL. “Association of single nucleotide polymorphisms in JAK3, STAT4, and STAT6 with new cardiovascular events in incident dialysis patients.” Am J Kidney Dis. 2009 May;53(5):845-55. doi: 10.1053/j.ajkd.2008.12.025. Epub 2009 Mar 12.

Charles RF, Powe NR, Jaar BG, Troll MU, Parekh RS, Boulware LE. “Clinical testing patterns and cost implications of variation in the evaluation of chronic kidney disease among U.S. physicians.” Am J Kidney Dis. 2009 Aug; 54(2): 227–237.

Plantinga LC, Fink NE, Finkelstein FO, Powe NR, Jaar BG. “Association of peritoneal dialysis clinic size with clinical outcomes.” Perit Dial Int. 2009 May-Jun;29(3):285-91.

Weaver VM, Griswold M, Todd AC, Jaar BG, Ahn KD, Thompson CB, Lee BK. “Longitudinal associations between lead dose and renal function in lead workers.” Environ Res. 2009 Jan;109(1):101-7. doi: 10.1016/j.envres.2008.09.005. Epub 2008 Nov 26.

Crews D, Jaar BG. “Racial differences in chronic kidney disease incidence and progression among individuals with HIV.” Nat Clin Pract Nephrol. 2008 Dec; 4(12): 652–653.

Parekh RS, Meoni LA, Kao WHL, Plantinga LC, Jaar BG, Fink NE, Powe NR, Coresh J, Klag MJ. “The association of sudden cardiac death with inflammation and other traditional risk factors.” Kidney International. 2008;74(10):1335-1342.

Activities & Honors


  • Valedictorian, School of Medicine and Pharmacy,, State University of Haiti, 1987
  • Valedictorian, Necker School of Medicine,, University of Paris V, 1992
  • The Boehringer Mannheim Prize, 1992
  • The Victoria Prize, 1999
  • Ruth L. Kirschstein National Research Service Award to train in Renal Disease Epidemiology, National Institute of Diabetes, Digestive and Kidney Diseases, 2001 - 2003
  • Richard Ross Clinician Scientist Award, Johns Hopkins University - School of Medicine., 2003 - 2004
  • Junior Faculty Clinical Research Award. Department of Medicine Johns Hopkins University School of Medicine for the project entitle: Dialysis Modality and Mortality in a National Cohort: The CHOICE Study, 2004
  • Fellow, American Society of Nephrology, 2005
  • Physician's Recognition Award certificate with commendation (AMA PRA), AMA, 2003 - 2009
  • Associate Faculty Member, Welch Center for Prevention, Epidemiology and Clinical Research Johns Hopkins Medical Institutions, 2008
  • John Rogers Excellence in Teaching Award, 2009
  • Volunteer of the Year Award, National Kidney Foundation of Maryland, 2013


  • American College of Physicians

    American College of Physicians, a national organization of internists

  • American Medical Association

    American Medical Association, the largest association of physicians and medical students in the United States

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  • American Society of Nephrology

    American Society of Nephrology, an organization that aims to prevent, treat and cure kidney diseases

  • International Society of Nephrology

    International Society of Nephrology, an international organization representing specialists in nephrology

  • National Kidney Foundation

    National Kidney Foundation, an organization dedicated to the awareness, prevention and treatment of kidney disease

Professional Activities

  • Chair, National Kidney Foundation of Maryland’s Medical Advisory Board, 2011
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