Jia Liu is a Nephrologist in Columbia, Maryland. Dr. Liu is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. 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 rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. 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 rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. 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 rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. Her top areas of expertise are Renovascular Hypertension, Acute Kidney Failure, Acute Tubular Necrosis, and Nephrosclerosis.

Tamil Kuppusamy is a Nephrologist in Columbia, Maryland. Dr. Kuppusamy is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Vitamin D Deficiency, and Diabetic Nephropathy. Dr. Kuppusamy is currently accepting new patients.

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 Focal Segmental Glomerulosclerosis. 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 Advanced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. His top areas of expertise are End-Stage Renal Disease (ESRD), Glomerulonephritis, Lupus Nephritis, Chronic Kidney Disease, and Kidney Transplant.

Dr. Meredith Atkinson is an associate professor of pediatrics in the Johns Hopkins University School of Medicine. She provides care for children with kidney problems of any type, including patients on dialysis; patients with proteinuria, hematuria and chronic kidney disease; and kidney transplant. Dr. Atkinson's clinical research interests focus on chronic kidney disease and end-stage kidney disease in children. Her specific interests include mechanisms and treatment of anemia in chronic kidney disease and racial disparities in patient outcomes. She is the recipient of numerous research grants and awards, including a K23 Patient Oriented Research award from the National Institute of Diabetes and Digestive and Kidney Diseases/NIH, and young investigator grants from the National Kidney Foundation, the National Kidney Foundation of Maryland, the Thrasher Research Fund and Amgen Inc. She is currently the PI of the Renal Anhydramnios Fetal Therapy (RAFT) trial. She received her undergraduate degree in biology from Mount Holyoke College. She earned her M.D. from the University of Rochester School of Medicine and Dentistry. She completed a residency in pediatrics at Johns Hopkins, followed by a fellowship in pediatric nephrology at Hopkins, completed in June 2007. During her fellowship training, Dr. Atkinson received a master’s degree in epidemiology from the Johns Hopkins Bloomberg School of Public Health. Dr. Atkinson joined the Johns Hopkins faculty in 2007. Dr. Atkinson was elected to the Society for Pediatric Research in 2014. She is a member of several professional organizations including the American Society of Nephrology, and is the president of the American Society of Pediatric Nephrology for 2024-2026. Dr. Atkinson is rated as an Advanced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. Her top areas of expertise are Potter Syndrome, Lupus Nephritis, Glomerulonephritis, Anemia, and Kidney Transplant.

Ritu Vyas is a Nephrologist and a Public Health and Preventive Medicine provider in Catonsville, Maryland. Dr. Vyas has been practicing medicine for over 17 years and is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. Her top areas of expertise are Acute Kidney Failure, Nephrosclerosis, Renovascular Hypertension, Chronic Kidney Disease, and Kidney Transplant. Dr. Vyas is currently accepting new patients.

Dr. Alicia M. Neu is a professor of pediatrics at the Johns Hopkins University School of Medicine. Her areas of clinical expertise include pediatric chronic kidney disease and pediatric nephrology. Dr. Neu is currently Chief of the Division of Pediatric Nephrology. She has been medical director of Pediatric Kidney Transplantation since 2001. She received her undergraduate degree in engineering from Marquette University. She earned her M.D. from the University of Virginia School of Medicine. She completed her residency in pediatrics and performed a fellowship in pediatric nephrology at Johns Hopkins. Dr. Neu joined the Johns Hopkins faculty in 1994. Dr. Neu's research interests include clinical outcomes in children with chronic kidney disease including those who require dialysis and kidney transplantation. She serves as President of the North American Pediatric Renal Trials and Collaborative Study (NAPRTCS). She leads the Standardizing Care to Improve Outcomes in Pediatric End Stage in Renal Disease (SCOPE) project, which is part of the Children’s Hospital Association’s Quality Transformation Network. Dr. Neu serves as co-Medical Editor for the American Board of Pediatrics’ Nephrology Subboard. She previously served on the Council for the American Society of Pediatric Nephrology, the International Society of Pediatric Nephrology, the executive committee of the American Academy of Pediatrics’ Section on Pediatric Nephrology, and as chair of the American Society of Transplantation’s Pediatric Community of Practice Executive Committee. Dr. Neu is a member of several professional organizations, including the American Pediatric Society, the International Society of Nephrology and the American Society of Nephrology. Dr. Neu is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. Her top areas of expertise are Potter Syndrome, Cystinosis, Focal Segmental Glomerulosclerosis, Minimal Change Disease, and Kidney Transplant.

Rudolf Pullmann is a Nephrologist in Catonsville, Maryland. Dr. Pullmann is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Acute Tubular Necrosis, and Acute Kidney Failure. Dr. Pullmann is currently accepting new patients.

Ajay Gangalam is a Nephrologist in Catonsville, Maryland. Dr. Gangalam is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. His top areas of expertise are Acute Kidney Failure, Renovascular Hypertension, Nephrosclerosis, Gastrostomy, and Hip Replacement. Dr. Gangalam is currently accepting new patients.

Mary Behrens is a Nephrologist in Catonsville, Maryland. Dr. Behrens is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. 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.

Navneet Ahuja is a Nephrologist in Catonsville, Maryland. Dr. Ahuja is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Acute Kidney Failure, and End-Stage Renal Disease (ESRD).

Robert Fuld is a Nephrologist in Baltimore, Maryland. Dr. Fuld is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, Vitamin D Deficiency, and Chronic Kidney Disease. Dr. Fuld 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 rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Minimal Change Disease.

Jean Hou is a primary care provider, practicing in Internal Medicine in Halethorpe, Maryland. Dr. Hou is rated as an Advanced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. Her top areas of expertise are Glomerulonephritis, Membranoproliferative Glomerulonephritis, Membranous Nephropathy, Minimal Change Disease, and Kidney Transplant.

Matthew Weir is a Nephrologist in Baltimore, Maryland. Dr. Weir is rated as an Experienced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. 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.

Robert Greenwell is a Nephrologist in Baltimore, Maryland. Dr. Greenwell is rated as an Advanced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. His top areas of expertise are Nephrosclerosis, End-Stage Renal Disease (ESRD), Renovascular Hypertension, and Chronic Kidney Disease.

Jeffrey Posner is a Nephrologist in Owings Mills, Maryland. Dr. Posner is rated as an Advanced provider by MediFind in the treatment of Focal Segmental Glomerulosclerosis. His top areas of expertise are Nephrosclerosis, Renovascular Hypertension, End-Stage Renal Disease (ESRD), and Chronic Kidney Disease. Dr. Posner is currently accepting new patients.