Dr. Bernard Jaar is an associate 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 chronic kidney disease and all dialysis modalities. Dr. Jaar earned his M.D. from Faculte de Medecine et de Pharmacie of the State University of Haiti. He completed nephrology training at Hopitaux de Paris (Hopital Tenon, Hopital Saint Antoine, Hopital Saint Louis) University of Paris V, France. He subsequently completed an internal medicine residency at Graduate Hospital in Philadelphia and a nephrology fellowship at the Johns Hopkins Hospital, in addition to a post-doctoral fellowship in Epidemiology and a Master in Public Health at the Johns Hopkins Bloomberg School of Public Health. His research interests include epidemiology of chronic kidney disease and end-stage kidney disease, particularly survival in dialysis patients, peripheral arterial disease and environmental risk factors for kidney disease. Dr. Jaar was recognized with the C. Lockard Conley Award 2021 by the American College of Physician Maryland Chapter for contributions to resident education / research and the National Kidney Foundation Garabed Eknoyan Award 2022 for promoting the mission of NKF in making the lives of people with kidney disease better. He is a member of several professional organizations, including the International Society of Nephrology, American Society of Nephrology, National Kidney Foundation, American College of Physicians and the International Society of Peritoneal dialysis. Dr. Jaar is rated as an Elite provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Calcinosis, Low Potassium Level, and Kidney Transplant.

Dr. Crews is a Professor of Medicine in the Division of Nephrology at the Johns Hopkins University School of Medicine. She holds faculty appointments with the School of Nursing, the Welch Center for Prevention, Epidemiology and Clinical Research, the Center on Aging and Health, and the Center for Health Equity, where she is Deputy Director. Her research program aims to advance equity in kidney disease and hypertension outcomes by focusing on social drivers of health inequities. An elected member of the American Society for Clinical Investigation, Dr. Crews has received numerous awards for her research contributions, including the 2018 Johns Hopkins University President’s Frontier Award--a $250,000 award granted to a single faculty scholar on the cusp of transforming their field. She is a former National Academy of Medicine (NAM) Emerging Leader Scholar and was the inaugural Gilbert S. Omenn Anniversary Fellow of the NAM. In 2019, Dr. Crews received the W. Lester Henry Award for Diversity and Access to Care from the American College of Physicians and the Distinguished Leader Award from the American Society of Nephrology. Dr. Crews is the founding director of the Doctoral Diversity Program, a 2-year, research-intensive post-baccalaureate program of the Johns Hopkins Initiative for Careers in Science and Medicine. Dr. Crews received her undergraduate degree from the University of Virginia and her medical degree from Saint Louis University. A graduate of the Osler Medical Training Program, she completed nephrology fellowship and a master’s in clinical epidemiology degree at Johns Hopkins. Dr. Crews is rated as an Elite provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Arteriovenous Malformation, Kidney Transplant, and Nephrectomy.

Steve Sozio is a Nephrologist in Baltimore, Maryland. Dr. Sozio is rated as an Elite provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Calcinosis, Renovascular Hypertension, and Kidney Transplant.

Daniel C. Brennan, M.D., joins the Johns Hopkins Division of Renal Medicine as professor of nephrology and medical director of the Comprehensive Transplant Center. Dr. Brennan’s areas of clinical expertise include transplant nephrology and renal disease. Prior to joining Johns Hopkins, Dr. Brennan was the Alan A. and Edith L. Wolff Professor of renal Diseases at Washington University and the Director of Transplant Nephrology at the Washington University School of Medicine. He received his undergraduate degree from Cornell College and earned his medical degree at the University of Iowa, where he completed a residency in internal medicine. He then completed research and clinical nephrology fellowships at Brigham & Women’s Hospital/Harvard Medical School. Dr. Brennan holds professional memberships at various organizations, including the American College of Physicians, the International Society of Nephrology, the American Society of Nephrology, The Transplantation Society, the American Society of Transplant Physicians and the American Society of Clinical Investigation. Dr. Brennan is rated as an Elite provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Chronic Kidney Disease, Cytomegalovirus Infection, Cytomegalic Inclusion Disease, Kidney Transplant, and Pancreas Transplant.

Dr. Geetha is a Professor of Clinical Medicine in the Division of Nephrology, Johns Hopkins University School of Medicine. A graduate of Madras Medical College, India, she completed Internal Medicine training in U.K. She did her Internal Medicine Residency at York, PA and Nephrology fellowship at Johns Hopkins Bayview Medical Center. She has been on Hopkins faculty since 1998. She is the Associate Director of the Johns Hopkins Vasculitis Center and co-director of the Johns Hopkins Glomerular Disease Clinic. She is a member of Royal College of Physicians (U.K.) and Fellow of the American Society of Nephrology. She was inducted to the Miller Coulson Academy of Clinical Excellence. Dr. Geetha is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Glomerulonephritis, Microscopic Polyangiitis, Chronic Kidney Disease, Granulomatosis with Polyangiitis, and Kidney Transplant.

Dr. Sumeska Thavarajah is an assistant professor of medicine at the Johns Hopkins University School of Medicine. Her areas of expertise include nephrology. Dr. Thavarajah earned her M.D. at Wayne State University School of Medicine. She completed her residency at the University of Connecticut Health Center and performed nephrology fellowships at Johns Hopkins Bayview Medical Center and the University of Connecticut Health Center. She serves as chair of the National Kidney Foundation of Maryland’s Medical Advisory Board. She was recognized by the National Kidney Foundation of Maryland with a Linda Cameron Award for Patient Services in 2015. Courses & Syllabi Nephrology Elective (Consultation Service),, Bayview Medical Center, 1/1/15. Dr. Thavarajah is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Nephrosclerosis, and Renovascular Hypertension.

Matthew Weir is a Nephrologist in Baltimore, Maryland. Dr. Weir is rated as an Elite provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are High Potassium Level, Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Kidney Transplant, and Nephrectomy. Dr. Weir is currently accepting new patients.

Michelle Estrella is a Nephrologist in Baltimore, Maryland. Dr. Estrella is rated as an Elite provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Focal Segmental Glomerulosclerosis, Prerenal Azotemia, and Kidney Transplant.

Rulan Parekh is a Nephrologist and a Pediatrics provider in Baltimore, Maryland. Dr. Parekh is rated as an Elite provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Nephrotic Syndrome, Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Focal Segmental Glomerulosclerosis, and Kidney Transplant.

Dr. Haroun’s area of clinical expertise is nephrology. She earned her M.D. at the Medical College of Virginia School of Medicine. She completed her residency and performed a fellowship in nephrology at Johns Hopkins. Dr. Haroun is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Acute Kidney Failure, Chronic Kidney Disease, Nephrosclerosis, and Renovascular Hypertension.

Dr. Mohamad Hanouneh is an Assistant Professor of Medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include renal medicine. Dr. Hanouneh grew up in Syria and completed his medical school in Tishreen University in Latakia, Syria. He completed Internal Medicine Residency training at Cleveland Clinic, and Nephrology Fellowship at Johns Hopkins. Dr. Hanouneh currently serves as a part-time faculty in the Division of Nephrology at Johns Hopkins. He also works in the Nephrology Center of Maryland covering Good Samaritan and Upper Chesapeake Hospitals. Dr. Hanouneh has a passion in medical education. He runs the nephrology board review course and participates in Genes to Society Course of Renal Physiology, which is given to the medical students at Johns Hopkins University School of Medicine. His area of interests are electrolytes disorders, diabetic kidney disease and nephrolithiasis. Dr. Hanouneh is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Low Potassium Level, End-Stage Renal Disease (ESRD), Chronic Kidney Disease, and High Potassium Level.

Dr. Nada Alachkar is an associate professor of medicine at the Johns Hopkins University School of Medicine. Her areas of clinical expertise include incompatible kidney transplants, kidney transplants, nephrology and pancreas transplants. Dr. Alachkar earned her M.D. at Aleppo University Faculty of Medicine in Syria. She completed residencies at Aleppo University and Wright State University School of Medicine. She performed clinical fellowship in nephrology and transplant nephrology fellowship at Johns Hopkins University. Her research interests include recurrent glomerular diseases post kidney transplantation; in particular recurrent FSGS post transplant. Also, she is studying biomarkers in kidney transplants; outcome of living and deceased donor kidney transplant recipients with positive crossmatch; and responses to desensitization treatments and post-transplant outcome in highly sensitized patients. Dr. Alachkar is a member of the American Society of Nephrology and the American Society of Transplantation. Dr. Alachkar is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Focal Segmental Glomerulosclerosis, Atypical Hemolytic Uremic Syndrome (aHUS), D-Plus Hemolytic Uremic Syndrome, Kidney Transplant, and Splenectomy.

Dr. Fizza Naqvi is an assistant professor of medicine at the Johns Hopkins University School of Medicine. Her areas of clinical expertise include nephrology, kidney and pancreas transplant. Dr. Naqvi received her medical degree from the Aga Khan Medical College in Karachi, Pakistan. She performed a fellowship in nephrology at the University of Alabama at Birmingham. She completed training in transplant nephrology at Johns Hopkins. Dr. Naqvi speaks English and Urdu. Dr. Naqvi is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, Cytomegalic Inclusion Disease, and Kidney Transplant.

Mohamed G. Atta, MD, MPH, is Professor of Medicine at Johns Hopkins University School of Medicine in Baltimore, Maryland and Director of Von Hippel Lindau Clinical Care Center at Hopkins. A graduate of Mansoura University School of Medicine in Egypt, he completed his internship and residency training in various locations including the Urology and Nephrology Center at Mansoura University, Cabrini Medical Center in New York, and Johns Hopkins University School of Medicine. Dr. Atta received his MPH degree from Johns Hopkins Bloomberg School of Public Health in 2005. Dr. Atta is a member of the Health Disparity Committee at the Department of Health and Mental Hygiene in Maryland, the Scientific Council on Kidney of the American Heart Association, the International Society of Nephrology, and the American Society of Nephrology. Dr. Atta has participated as principal investigator in several studies, clinical trials, and serves as a peer reviewer for the Journal of Clinical Investigation, Archives of Internal Medicine, American Journal of Medicine, Kidney International, Journal of the American Society of Nephrology, Clinical Journal of the American Society of Nephrology, American Journal of Kidney Diseases, Clinical Infectious Disease, and Journal of Infectious Diseases among others. He authored or co-authored numerous articles published in Genomics, the Journal of Biological Chemistry, Journal of clinical investigation, Clinical Infectious Disease, Circulation, Stem Cells Translational Medicine, American Journal of Medicine, and American Journal of Transplantation, Journal of the American Society of Nephrology, Clinical Journal of the American Society of Nephrology, American Journal of Kidney Disease, Nephrology Dialysis Transplantation, and Kidney International, among others. Dr. Atta is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Glomerulonephritis, Lupus Nephritis, Chronic Kidney Disease, and Kidney Transplant.

Dr. C. John Sperati is an Associate Professor of Medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include renal medicine. Dr. Sperati is Director of the Glomerular Diseases Fellowship Program since 2023 and formerly directed the Nephrology Fellowship Training Program from 2019 - 2025. He was the long-serving Firm Faculty Leader of the Barker Firm and has held leadership positions within the Osler Medical Residency training program. In addition, he co-directs the Johns Hopkins Osler Learning Initiative which brings the principles of medical residency training to executive education worldwide. He obtained his medical degree from The Pennsylvania State University College of Medicine and a Master in Health Science from the Johns Hopkins Bloomberg School of Public Health. He completed an internship and residency in Internal Medicine at the Johns Hopkins Hospital, followed by a year as an Assistant Chief of Service (chief resident). He subsequently pursued subspecialty training in nephrology at the Johns Hopkins Hospital and joined the faculty in the Division of Nephrology. Dr. Sperati’s clinical interests are in thrombotic microangiopathy including atypical hemolytic uremic syndrome (aHUS), complement-mediated kidney diseases including C3 glomerulopathy, glomerular disease such as glomerulonephritis (e.g., IgA nephropathy, MPGN) and nephrotic syndromes (e.g., FSGS, membranous, minimal change, amyloidosis, and others), and secondary and resistant hypertension (e.g., fibromuscular dysplasia, atherosclerotic renal arterial disease, hyperaldosteronism, and genetic hypertensive syndromes). He is the site principal investigator for clinical trials in glomerular disease, serves on editorial boards, and chairs the approval committee of the Longitudinal Knowledge Assessment for nephrology for the American Board of Internal Medicine. His clinical acumen and educational contributions have been recognized by induction into the Miller Coulson Academy of Clinical Excellence as well as the American Society of Nephrology Distinguished Educator Award in 2020. He has been recognized as a physician resource through the Atypical HUS Foundation, a NephCure glomerular disease specialist, an IgA Nephropathy Foundation specialist, and a Baltimore TopDoc. He is registered with the Florida Department of Health to perform telehealth services for patients in Florida. Dr. Sperati is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Atypical Hemolytic Uremic Syndrome (aHUS), D-Plus Hemolytic Uremic Syndrome, Hemolytic-Uremic Syndrome, Glomerulonephritis, and Kidney Transplant.

Jonathan Lim is a Nephrologist in Baltimore, Maryland. Dr. Lim has been practicing medicine for over 10 years and is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Acute Kidney Failure, Chronic Kidney Disease, and Low Sodium Level.

Dr. Abbal Koirala hails from Kathmandu, Nepal. He completed a nephrology and glomerulonephritis fellowship at the University of Washington, Seattle, and held the position of Clinical Assistant Professor there from 2020 to 2024. In August 2024, he joined the faculty of the Division of Nephrology at the Johns Hopkins School of Medicine as the Assistant Professor of Medicine and Associate Director at the Johns Hopkins Glomerular Clinic. Dr. Koirala sees patients with glomerular diseases and provides second opinions upon request. His clinical and research interests revolve around glomerular diseases and onco-nephrology. Dr. Koirala is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Goodpasture Syndrome, Lupus Nephritis, Glomerulonephritis, and Chronic Kidney Disease.

Dr. Cervantes is the Director of the Nephrology Fellowship Training Program at Johns Hopkins University School of Medicine and a member of the Johns Hopkins Amyloid Center. Dedicated to medical education, she co-directed the Genes to Society Renal Physiology Course from 2021 to 2025 and previously served as Assistant Program Director for the fellowship, leading efforts in career pathway development. Her clinical and research interests include amyloidosis, paraproteinemias, hypertension, diabetic kidney disease, and quality improvement. Dr. Cervantes was selected for the 14th cohort of the Armstrong Institute Patient Safety and Quality Leadership Academy and the 3rd cohort of the International Society of Nephrology Emerging Leaders Program, reflecting her commitment to quality, advocacy, and global health. Selected Publications Cervantes CE, Atta MG. Kidney Amyloidosis: Updates on Pathogenesis and Therapeutic Frontiers. Am J Nephrol. 2024 Jun 12. PMID: 38865984. Tamargo C, Hanouneh M, Cervantes CE. Treatment of Acute Kidney Injury: A Review of Current Approaches and Emerging Innovations. J Clin Med. 2024 Apr 23;13(9):2455. Cervantes CE, Bloch EM, Sperati CJ. Therapeutic Plasma Exchange: Core Curriculum 2023. Am J Kidney Dis. 2023;81(4):475-492. Cervantes CE, Kant S, Atta M, The Link between Conventional and Novel Anti-Cancer Therapeutics with Thrombotic Microangiopathy. Drug Metab Lett. 2021 doi: 10.2174/1872312814666210716141633 PMID: 34279209 Cervantes CE, Sperati CJ. From Dropsy to Chart Biopsy- Opportunities and Pitfalls of Electronic Health Records. Kidney360. 2021; doi: 10.34067/KID.0004392021 PMID:35373111 Cervantes, CE, Atta, Mohamed G. Chapter 4. Chronic Tubulointerstitial nephritis: Hypokalemia, hyperoxaluria, and hyperuricemia. In the Book: Tubulointerstitial Nephritis. Edited by Mohamed G. Atta and Mark A. Perazella. 2022. Springer Cervantes, CE, Hanouneh, Mohamad. A New Era in Diabetic Kidney Disease. In the Book: Chronic Kidney Disease – Beyond the Basics. Edited by Prof. Ane Claudia Fernandes Nunes. 2022. IntechOpen. DOI: 10.5992/intechopen.1000197 Alvarado F, Cervantes CE, Crews D, Blanck J, Al Ammary F, Ng D, Purnell T. Examining post-donation outcomes in Hispanic/Latinx living kidney donors in the United States: A systematic review. Am J Transplant. 2022. doi: 10.1111/ajt.17017. PMID:35258164 Courses & SyllabiGenes To Society Pathophysiology Course of Medical Students, Johns Hopkins University School of Medicine, 2021- 2025. Dr. Pacurucu is rated as an Experienced provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Chronic Kidney Disease, and End-Stage Renal Disease (ESRD).

Dr. Mejia is an Assistant Professor of Medicine at the Johns Hopkins University School of Medicine. Her areas of clinical expertise include chronic and acute kidney disease, and kidney and pancreas transplantation. Dr. Mejia earned her M.D. from the University of the Philippines. She completed her residency at the University of the Philippines-Philippine General Hospital. She completed her General Nephrology Fellowship at Thomas Jefferson University in Philadelphia where she served as chief fellow. She then pursued a fellowship in Transplant Nephrology at the Johns Hopkins University after which she joined as faculty. Dr. Mejia is rated as an Experienced provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Chronic Kidney Disease, Low Sodium Level, Focal Segmental Glomerulosclerosis, Kidney Transplant, and Nephrectomy.

Farah Abifaraj is a Nephrologist in Baltimore, Maryland. Dr. Abifaraj is rated as an Experienced provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), High Potassium Level, and Hypophosphatasia (HPP).