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 Experienced provider by MediFind in the treatment of Metabolic Acidosis. His top areas of expertise are Atypical Hemolytic Uremic Syndrome (aHUS), D-Plus Hemolytic Uremic Syndrome, Hemolytic-Uremic Syndrome, Glomerulonephritis, and Kidney Transplant.

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

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 Metabolic Acidosis. Her top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Arteriovenous Malformation, Kidney Transplant, and Nephrectomy.

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 Metabolic Acidosis. 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 Metabolic Acidosis. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Calcinosis, Low Potassium Level, and Kidney Transplant.

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

Christina Tamargo is a Nephrologist in Baltimore, Maryland. Dr. Tamargo is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. Her top areas of expertise are Metabolic Acidosis, High Potassium Level, Wilson Disease, and Diabetic Nephropathy.

Divyanshu Malhotra is a Nephrologist in Baltimore, Maryland. Dr. Malhotra is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. His top areas of expertise are Cytomegalic Inclusion Disease, Cytomegalovirus Infection, Chronic Kidney Disease, End-Stage Renal Disease (ESRD), 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 Experienced provider by MediFind in the treatment of Metabolic Acidosis. His top areas of expertise are End-Stage Renal Disease (ESRD), Acute Kidney Failure, Chronic Kidney Disease, and Low Sodium Level.

Joshua King is a Nephrologist and a Hospital Medicine provider in Baltimore, Maryland. Dr. King is rated as an Advanced provider by MediFind in the treatment of Metabolic Acidosis. His top areas of expertise are Metabolic Acidosis, Liddle Syndrome, Pseudohypoaldosteronism Type 2, Chronic Kidney Disease, and Hip Replacement. Dr. King is currently accepting new patients.

Somajita Ghosal, M.D., practices internal medicine at Johns Hopkins Community Physicians in White Marsh. She received her medical degree from Calcutta National Medical College, and also completed her residency in internal medicine at the University of Florida Health Science Center Jacksonville. Dr. Ghosal is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. Her top areas of expertise are Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Cirrhosis, and Familial Combined Hyperlipidemia.

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

Manish Shah is a primary care provider, practicing in Internal Medicine in Baltimore, Maryland. Dr. Shah is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. His top areas of expertise are Acute Kidney Failure, Small Cell Lung Cancer (SCLC), Colorectal Cancer, Endoscopy, and Colonoscopy.

Kalpana Jindal is a primary care provider, practicing in Internal Medicine in Baltimore, Maryland. Dr. Jindal is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. Her top areas of expertise are Stroke, Apoplexy, Generalized Tonic-Clonic Seizure, Transient Ischemic Attack (TIA), and Gastrostomy.

Sarah Khan is a Nephrologist and a Hospital Medicine provider in Baltimore, Maryland. Dr. Khan is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. Her top areas of expertise are Autosomal Dominant Hypocalcemia, Nephrosclerosis, Renovascular Hypertension, and Hypophosphatemia. Dr. Khan is currently accepting new patients.

Tihana Premuzic is a Nephrologist in Baltimore, Maryland. Dr. Premuzic is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. Her top areas of expertise are Autosomal Dominant Hypocalcemia, Hypophosphatemia, Childhood Hypophosphatasia (HPP), and Hypophosphatasia (HPP). Dr. Premuzic is currently accepting new patients.

Valeriu Cebotaru is a Nephrologist in Baltimore, Maryland. Dr. Cebotaru is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. His top areas of expertise are Polycystic Kidney Disease, Autosomal Dominant Polycystic Kidney Disease, Acute Kidney Failure, and Nephrosclerosis. Dr. Cebotaru is currently accepting new patients.

Neil Agarwal is a Nephrologist in Baltimore, Maryland. Dr. Agarwal is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. His top areas of expertise are Low Sodium Level, Nephrosclerosis, Renovascular Hypertension, and Acute Kidney Failure. Dr. Agarwal is currently accepting new patients.

Abdolreza Haririan is a Nephrologist in Baltimore, Maryland. Dr. Haririan is rated as an Experienced provider by MediFind in the treatment of Metabolic Acidosis. His top areas of expertise are Cytomegalovirus Infection, Chronic Kidney Disease, Cytomegalic Inclusion Disease, Acute Kidney Failure, and Kidney Transplant. Dr. Haririan is currently accepting new patients.