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 rated as an Advanced provider by MediFind in the treatment of Acute Kidney Failure. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Nephrosclerosis.

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 Acute Kidney Failure. 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 Acute Kidney Failure. His top areas of expertise are End-Stage Renal Disease (ESRD), Glomerulonephritis, Lupus Nephritis, Chronic Kidney Disease, and Kidney Transplant.

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 Acute Kidney Failure. 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 Acute Kidney Failure. 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 Acute Kidney Failure. Her top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, Cytomegalic Inclusion Disease, 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 an Advanced provider by MediFind in the treatment of Acute Kidney Failure. Her top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Nephrosclerosis, and Renovascular Hypertension.

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 Acute Kidney Failure. Her top areas of expertise are Acute Kidney Failure, 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 Advanced provider by MediFind in the treatment of Acute Kidney Failure. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Calcinosis, Low Potassium Level, 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 Experienced provider by MediFind in the treatment of Acute Kidney Failure. His top areas of expertise are Chronic Kidney Disease, Cytomegalovirus Infection, Cytomegalic Inclusion Disease, Kidney Transplant, and Pancreas Transplant.

Dr. Sara Mixter is Assistant Professor of Medicine and Pediatrics at the Johns Hopkins University School of Medicine. Her areas of clinical expertise are internal medicine, pediatrics, and primary care for adults with developmental disabilities and other complex childhood-onset conditions. She is the director of the Hopkins PACT (Pediatric-informed Adult Care and Transition) Clinic. Dr. Mixter is also the medical director of the Pediatric Complex Care Collaborative (PC3) for the Johns Hopkins Children’s Center. Dr. Mixter received her A.B. from Harvard College. She earned her M.D. from Harvard Medical School and M.P.H. from the Harvard School of Public Health. She completed her residency at Johns Hopkins as part of the inaugural group of trainees in the Urban Health Combined Internal Medicine-Pediatrics Residency Program. Her research interests include transitions of care for adolescents with special healthcare needs and education for residents and medical students, especially in primary care and complex care. Dr. Mixter has served as the Assistant Chief of Service for the Longcope firm of the Osler Medical Housestaff Training Program (2015-16), as well as Assistant Program Director for Ambulatory Education (2014-15). Dr. Mixter is rated as an Experienced provider by MediFind in the treatment of Acute Kidney Failure. Her top areas of expertise are Cerebral Palsy, Gastroparesis, Orbital Cellulitis, and Sickle Cell Disease.

Anita Pasumarthy is a Nephrologist in Baltimore, Maryland. Dr. Pasumarthy is rated as an Advanced provider by MediFind in the treatment of Acute Kidney Failure. Her top areas of expertise are Nephrosclerosis, Renovascular Hypertension, End-Stage Renal Disease (ESRD), and Chronic Kidney Disease.

Novia Singh is a Nephrologist in Baltimore, Maryland. Dr. Singh is rated as an Advanced provider by MediFind in the treatment of Acute Kidney Failure. Her top areas of expertise are End-Stage Renal Disease (ESRD), Nephrosclerosis, Renovascular Hypertension, and Chronic Kidney Disease.

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

Semenawit Burka is a primary care provider, practicing in Cardiologist in Baltimore, Maryland. Dr. Burka is rated as an Experienced provider by MediFind in the treatment of Acute Kidney Failure. Her top areas of expertise are Pericarditis, Acute Kidney Failure, High Cholesterol, and Coronary Heart Disease.

Dr. Edward Kraus is a Professor of Medicine in the Department of Medicine, Division of Nephrology, at the Johns Hopkins University School of Medicine. He completed his undergraduate education at Cornell University, received his MD at Northwestern University and completed an Internal Medicine residency at Cleveland Metropolitan General Hospital in Cleveland, OH. After completing a Nephrology Fellowship at Baltimore City Hospitals, Dr. Kraus has been a member of the faculty since 1981. As part of his clinical duties he has cared for kidney transplant patients during his entire tenure at Johns Hopkins. As the scope of the kidney transplant program grew, his clinical responsibilities during the last 15 years have been limited to care of kidney and pancreas transplant donors and recipients. He currently serves as the Senior Kidney Transplant Nephrologist and Medical Director of the Pancreas Transplant Program. Dr. Kraus’ interests have focused upon factors affecting the long-term outcomes of kidney transplant recipients and barriers to access of care for minority recipients. He has worked extensively with Pathology and has participated in the development of the Johns Hopkins Incompatible Kidney Transplant Program with particular emphasis on evolving concepts of patterns of injury with the goal of development of clinical interventions to preserve allograft function. Dr. Kraus is a member of the National Kidney Foundation, the American Society of Nephrology, the International Society of Nephrology and the American Society of Transplantation. He actively serves on Committees of these various organizations. Upon nomination by his patients, students and peers in recognition for his clinical care and teaching skills, Dr. Kraus was inducted into the Miller-Coulson Academy of Clinical Excellence at the Johns Hopkins Bayview Medical Center. Dr. Kraus is rated as an Experienced provider by MediFind in the treatment of Acute Kidney Failure. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Cytomegalic Inclusion Disease, Kidney Transplant, and Splenectomy.

Dipal Patel is a Nephrologist in Baltimore, Maryland. Dr. Patel is rated as an Experienced provider by MediFind in the treatment of Acute Kidney Failure. Her top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Renovascular Hypertension.

Dr. Bradley C. Strunk is an instructor of medicine at the Johns Hopkins University School of Medicine. His area of clinical expertise is internal medicine. Dr. Strunk is a hospitalist at Johns Hopkins Howard County Medical Center. Dr. Strunk earned his M.D. at Johns Hopkins. He completed his residency at Johns Hopkins Bayview Medical Center. Dr. Strunk is rated as an Experienced provider by MediFind in the treatment of Acute Kidney Failure. His top areas of expertise are Sickle Cell Disease, Renovascular Hypertension, Necrosis, Endoscopy, and Ureteroscopy.

Dr. Nejib Salih Siraj is a clinical associate of medicine at the Johns Hopkins University School of Medicine. His area of clinical expertise is internal medicine. A hospitalist, he is a member of the Collaborative Inpatient Medicine Service at Johns Hopkins Bayview Medical Center. Dr. Siraj earned his M.B.B.S. from Gondar College of Medical Sciences. He completed residencies in internal medicine at Addis Ababa University and Allegheny General Hospital. Dr. Siraj is rated as an Experienced provider by MediFind in the treatment of Acute Kidney Failure. His top areas of expertise are Interstitial Nephritis, Orthostatic Hypotension, Familial Neurocardiogenic Syncope, and Sepsis.