Jia Liu is a Nephrologist in Columbia, Maryland. Dr. Liu is highly rated in 23 conditions, according to our data. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Acute Kidney Failure, and Chronic Kidney Disease.

Mary Pieprzak is a Nephrologist in Columbia, Maryland. Dr. Pieprzak is highly rated in 18 conditions, according to our data. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Acute Kidney Failure, and Chronic Kidney Disease.

Tin Maung is a Nephrologist in Columbia, Maryland. Dr. Maung is highly rated in 14 conditions, according to our data. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Chronic Kidney Disease, and Acute Kidney Failure.

Ping-hsin Chen is a Nephrologist in Columbia, Maryland. Dr. Chen is highly rated in 13 conditions, according to our data. Her top areas of expertise are Renovascular Hypertension, Acute Kidney Failure, Acute Tubular Necrosis, and Nephrosclerosis.

Ajay Kumar is a Nephrologist in Columbia, Maryland. Dr. Kumar is highly rated in 12 conditions, according to our data. His top areas of expertise are Acute Kidney Failure, Nephrosclerosis, Renovascular Hypertension, and Acute Tubular Necrosis.

Rao Khan is a Nephrologist in Columbia, Maryland. Dr. Khan is highly rated in 10 conditions, according to our data. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Acute Kidney Failure, Chronic Kidney Disease, and Endoscopy.

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 highly rated in 11 conditions, according to our data. His top areas of expertise are Chronic Kidney Disease, Cytomegalovirus Infection, Cytomegalic Inclusion Disease, Kidney Transplant, and Pancreas Transplant.

Tamil Kuppusamy is a Nephrologist in Columbia, Maryland. Dr. Kuppusamy is highly rated in 9 conditions, according to our data. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Vitamin D Deficiency, and Diabetic Nephropathy. Dr. Kuppusamy is currently accepting new patients.

Misha Varma is a Nephrologist in Columbia, Maryland. Dr. Varma is highly rated in 2 conditions, according to our data. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, High Potassium Level, and Acute Kidney Failure.

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 highly rated in 15 conditions, according to our data. 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 highly rated in 12 conditions, according to our data. His top areas of expertise are End-Stage Renal Disease (ESRD), Glomerulonephritis, Lupus Nephritis, Chronic Kidney Disease, and Kidney Transplant.

Matthew Weir is a Nephrologist in Baltimore, Maryland. Dr. Weir is highly rated in 11 conditions, according to our data. 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.

Dr. Samir Gautam, is an Assistant Professional of Medicine at Johns Hopkins School of Medicine with expertise in Nephrology and Critical Care Medicine. He staffs patients in Johns Hopkins Hospital, chronic dialysis clinics, Bayview Medical Center and clinic and also has a specialty clinic Post AKI clinic at Johns Hopkins Outpatient Center. Dr. Gautam is highly rated in 7 conditions, according to our data. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Nephrosclerosis.

Danielle Farrington is a Nephrologist in Columbia, Maryland. Her top areas of expertise are Renovascular Hypertension, Nephrosclerosis, and Chronic Kidney Disease.

Ajay Gangalam is a Nephrologist in Catonsville, Maryland. Dr. Gangalam is highly rated in 16 conditions, according to our data. His top areas of expertise are Acute Kidney Failure, Renovascular Hypertension, Nephrosclerosis, Gastrostomy, and Hip Replacement. Dr. Gangalam is currently accepting new patients.

Navneet Ahuja is a Nephrologist in Catonsville, Maryland. Dr. Ahuja is highly rated in 15 conditions, according to our data. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Acute Kidney Failure, and End-Stage Renal Disease (ESRD).

Rudolf Pullmann is a Nephrologist in Catonsville, Maryland. Dr. Pullmann is highly rated in 15 conditions, according to our data. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Acute Tubular Necrosis, and Acute Kidney Failure. Dr. Pullmann is currently accepting new patients.

Robert Fuld is a Nephrologist in Baltimore, Maryland. Dr. Fuld is highly rated in 14 conditions, according to our data. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Vitamin D Deficiency, and Chronic Kidney Disease. Dr. Fuld is currently accepting new patients.

Mary Behrens is a Nephrologist in Catonsville, Maryland. Dr. Behrens is highly rated in 13 conditions, according to our data. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Acute Kidney Failure, and End-Stage Renal Disease (ESRD). Dr. Behrens is currently accepting new patients.

Paul Turer is a Nephrologist in Catonsville, Maryland. Dr. Turer is highly rated in 8 conditions, according to our data. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Chronic Kidney Disease, and Diabetic Nephropathy. Dr. Turer is currently accepting new patients.

Jennifer Eras is a Nephrologist in Catonsville, Maryland. Dr. Eras is highly rated in 5 conditions, according to our data. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Chronic Kidney Disease, and End-Stage Renal Disease (ESRD). Dr. Eras is currently accepting new patients.

Terry Watnick is a Nephrologist in Baltimore, Maryland. Dr. Watnick is highly rated in 5 conditions, according to our data. Her top areas of expertise are Polycystic Kidney Disease, Autosomal Dominant Polycystic Kidney Disease, Autosomal Recessive Polycystic Kidney Disease, and Liddle Syndrome. Dr. Watnick is currently accepting new patients.

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 highly rated in 2 conditions, according to our data. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Minimal Change Disease.

Dr. Vyas is board-certified in Internal Medicine and Nephrology with a special interest in obesity related chronic kidney disease and nutritional counseling in CKD. Dr. Vyas is highly rated in 9 conditions, according to our data. Her top areas of expertise are Acute Kidney Failure, Nephrosclerosis, Renovascular Hypertension, Chronic Kidney Disease, and Kidney Transplant.

Kathryn Ratanavanich is a Nephrologist in Silver Spring, Maryland. Dr. Ratanavanich is highly rated in 5 conditions, according to our data. Her top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Diabetic Nephropathy, and Acute Tubular Necrosis.