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 an Advanced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are Atypical Hemolytic Uremic Syndrome (aHUS), D-Plus Hemolytic Uremic Syndrome, Hemolytic-Uremic Syndrome, Glomerulonephritis, 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 an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are End-Stage Renal Disease (ESRD), Glomerulonephritis, Lupus Nephritis, Chronic Kidney Disease, and Kidney Transplant.

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 Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. Her top areas of expertise are Focal Segmental Glomerulosclerosis, Atypical Hemolytic Uremic Syndrome (aHUS), D-Plus Hemolytic Uremic Syndrome, Kidney Transplant, and Splenectomy.

Jose Monroy-Trujillo is a Nephrologist in Baltimore, Maryland. Dr. Monroy-Trujillo is rated as an Advanced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are Lupus Nephritis, Glomerulonephritis, Chronic Kidney Disease, and Systemic Lupus Erythematosus (SLE). Dr. Monroy-Trujillo is currently accepting new patients.

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 an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. Her top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Nephrosclerosis, and Renovascular Hypertension.

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 Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Calcinosis, Low Potassium Level, and Kidney 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 an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. Her top areas of expertise are Glomerulonephritis, Microscopic Polyangiitis, Chronic Kidney Disease, Granulomatosis with Polyangiitis, and Kidney Transplant.

Kaleem Haque is a Nephrologist in Baltimore, Maryland. Dr. Haque is rated as an Advanced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, IgA Nephropathy, and Acute Kidney Failure.

Dr. Luis F. Gimenez is an assistant professor of medicine at the Johns Hopkins University School of Medicine. His area of clinical expertise includes nephrology. Dr. Gimenez received his medical degree from Facultad de Medicina de la Universidad de Chile. He completed residencies in internal medicine at Hospital Clinico Regional Dr. Guillermo Grant Benavente, Hospital Carlos Van Buren and the Johns Hopkins School of Medicine. He performed his fellowship in nephrology at Johns Hopkins. His research interests include the pathophysiology of chronic renal failure. Dr. Gimenez is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Minimal Change Disease.

Michael Zimring is a primary care provider, practicing in Internal Medicine in Baltimore, Maryland. Dr. Zimring is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are Asbestosis, Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis.

Preeti Chandra is a Nephrologist in Baltimore, Maryland. Dr. Chandra is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. Her top areas of expertise are Acute Kidney Failure, Lupus Nephritis, IgA Nephropathy, and Thin Basement Membrane Nephropathy. Dr. Chandra is currently accepting new patients.

Peter Lopresti is a primary care provider, practicing in Internal Medicine in Baltimore, Maryland. Dr. Lopresti is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Bronchitis, and IgA Nephropathy.

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 Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are Goodpasture Syndrome, Lupus Nephritis, Glomerulonephritis, and Chronic Kidney Disease.

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

Adam Berliner is a Nephrologist in Baltimore, Maryland. Dr. Berliner is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Nephrosclerosis, and Renovascular Hypertension. Dr. Berliner is currently accepting new patients.

Belinda Lee is a Nephrologist in Baltimore, Maryland. Dr. Lee is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. Her top areas of expertise are End-Stage Renal Disease (ESRD), High Potassium Level, Chronic Kidney Disease, and Acute Kidney Failure. Dr. Lee is currently accepting new patients.

Elias Ghandour is a Nephrologist in Baltimore, Maryland. Dr. Ghandour is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Nephrosclerosis, and Renovascular Hypertension. Dr. Ghandour is currently accepting new patients.

Veena Acharya is a Nephrologist in Baltimore, Maryland. Dr. Acharya is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. Her top areas of expertise are End-Stage Renal Disease (ESRD), Acute Kidney Failure, Chronic Kidney Disease, and Low Sodium Level. Dr. Acharya is currently accepting new patients.

Hyung Lim is a Nephrologist in Baltimore, Maryland. Dr. Lim is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Necrosis. Dr. Lim is currently accepting new patients.

Meegan Chestnut is a primary care provider, practicing in Internal Medicine in Glen Burnie, Maryland. Dr. Chestnut is rated as an Experienced provider by MediFind in the treatment of Thin Basement Membrane Nephropathy. Her top areas of expertise are Obesity, High Cholesterol, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.