Thomas Koinis is a primary care provider, practicing in Family Medicine in Durham, North Carolina. Dr. Koinis is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Heart Failure, Chronic Kidney Disease, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Koinis is currently accepting new patients.

I am a nephrologist at Duke University with over 20 years of experience as a clinician, clinical researcher, and mentor. In my outpatient practice, I take care of patients with chronic kidney disease (CKD). In my hospital work, I evaluate and care for patients with acute kidney injury and with electrolyte disorders. In clinical research, I am experienced in serving on steering committees for multicenter clinical trials in CKD, including work with National Institutes of Health (NIH)-funded trials -- the African American Study of Kidney Disease and Hypertension (AASK), the AASK Cohort Study, the Dialysis Access Consortium, and the Focal Segmental Glomerulosclerosis (FSGS) treatment trial. I recently joined the steering committee for the NIDDK consortium, pilot studies of candidate therapies for CKD. I am active in multiple industry-sponsored clinical trials. I am a member of the executive committee for the Collaborative Study Group, a consortium that has implemented several successful clinical trials in nephrology. Dr. Middleton is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), High Potassium Level, and Autosomal Dominant Polycystic Kidney Disease.

I take care of people with complicated hypertension (high blood pressure), chronic kidney diseases, and dialysis treatments. My niche is taking care of pregnant women with kidney diseases and hypertension, as well as complicated hypertension, chronic kidney disease, and dialysis in the hospital setting. I also take care of long-term follow-ups for patients who have had a kidney transplant. When I meet with a patient, I inform them about what the options are and help them make a decision. The kidney center here at Duke is nationally well-known, and we see patients from all over, including international patients. I always want my patients to know I am available for them, either through MyChart or if they call the office and ask a question; they'll usually get an answer within 24 hours. Dr. Kovalik is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Renovascular Hypertension, and Nephrosclerosis.

I came to Duke for medical school in 1981, remained here for all of my training, and joined the faculty in 1991. I enjoy participating in the care of patients in all phases of kidney disease. I have a special interest in kidney transplantation, and I particularly value the opportunity to see the same patient over time. Dr. Smith is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, Renovascular Hypertension, and Kidney Transplant.

I enjoy practicing nephrology and taking care of patients with kidney disorders. My clinical interests include management of uncontrolled high blood pressure, chronic kidney disease, acute kidney failure, and fluid and electrolyte disorders. I also have particular interest in the evaluation and management of kidney diseases affecting cancer patients (onco-nephrology). Dr. Ortiz is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Nephrosclerosis, Renovascular Hypertension, and Kidney Transplant.

Ruediger Lehrich is a Nephrologist in Durham, North Carolina. Dr. Lehrich has been practicing medicine for over 30 years and is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Low Sodium Level, and Acute Kidney Failure.

I am a general nephrologist and am happy to see patients with chronic kidney disease, glomerulonephritis, polycystic kidney disease, proteinuria, and resistant hypertension. I pride myself on returning telephone calls from my patients promptly and on sending letters to my patients following their clinic visits. What I like most about my practice is that I am able to take care of my patients for many years. Dr. Berkoben is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Glomerulonephritis, and Acute Kidney Failure.

I am a pediatric nephrologist and work with children with kidney disease. Some of the conditions that we see include congenital malformations of the kidney and the bladder, nephrotic syndrome, glomerulonephritis (inflammation of the kidney filters), and children who are on dialysis or who received kidney transplantation because of kidney failure. I listen carefully to parents when they bring their children to the clinic because they know their children better than any other person, and they are the best advocates for their child. I collaborate a lot with the other doctors in the clinic. Rest assured, when you visit our clinic and I am not around, the doctor who is seeing you knows everything about your child. This is a group practice with a very caring multidisciplinary team. Dr. Gbadegesin is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Focal Segmental Glomerulosclerosis, Nephrotic Syndrome, Minimal Change Disease, Glomerulonephritis, and Kidney Transplant.

Samuel Theodore is a Nephrologist in Durham, North Carolina. Dr. Theodore has been practicing medicine for over 37 years and is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Nephrosclerosis, and Renovascular Hypertension.

Tomasz Ryszard is a Nephrologist in Durham, North Carolina. Dr. Ryszard has been practicing medicine for over 32 years and is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Acute Kidney Failure, and Nephrosclerosis.

Charles Ian Cooperberg is a Nephrologist in Durham, North Carolina. Dr. Ian Cooperberg has been practicing medicine for over 42 years and is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Diabetic Nephropathy, and Nephrosclerosis.

Brian Shaner is a primary care provider, practicing in Family Medicine in Durham, North Carolina. Dr. Shaner is rated as an Experienced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Shaner is currently accepting new patients.

Amarnath Ahobala is a Nephrologist in Durham, North Carolina. Dr. Ahobala has been practicing medicine for over 33 years and is rated as a Distinguished provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Nephrosclerosis, and Renovascular Hypertension.

Kidney disease can affect anyone, anywhere and at any point in their life. It can be an acute episode or develop into a chronic disease. I enjoy being a Nephrologist because it gives me the opportunity to learn about, educate and empower the patients whose lives are intersected by kidney disease. I take pride in being approachable and accessible to my patients. When I am not at work, I enjoy spending time with my wife and kids and exploring all that North Carolina has to offer. Dr. Duronville is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Nephrosclerosis, and Feingold Syndrome.

David Butterly is a Nephrologist in Durham, North Carolina. Dr. Butterly has been practicing medicine for over 38 years and is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Autosomal Dominant Polycystic Kidney Disease, and Polycystic Kidney Disease.

I am an adult nephrologist. My clinical and research interest is in the care of patients with both chronic kidney disease and cardiovascular disease. I also see patients for abnormal kidney function, hypertension, electrolyte and mineral metabolism disorders, glomerular diseases and proteinuria, and advanced kidney disease management including dialysis. Dr. Edmonston is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Chronic Kidney Disease, End-Stage Renal Disease (ESRD), Hypophosphatemia, and High Potassium Level.

While I enjoy all aspects of Nephrology, I have a specific interest in caring for patients with glomerular diseases, such as lupus nephritis, vasculitis, IgA nephropathy, and membranous nephropathy in addition to several others. My goal as a physician is to establish long term relationships with my patients and ultimately help guide them through the difficulties that these autoimmune kidney disease and their treatments can present. When I am not practicing medicine, I enjoy spending time with my family and love to travel. Dr. Singh is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are End-Stage Renal Disease (ESRD), Chronic Kidney Disease, Necrosis, Osteotomy, and Bone Graft.

I am a transplant nephrologist specializing in the evaluation and care of kidney and pancreas transplant patients. I joined Duke Health in 2023 to lead the living donor kidney transplant program. Our living donor team is actively working to increase access to these life saving transplants by removing barriers to donation and through innovative use of paired donor exchange. Helping people live a longer, healthier life through transplant is my passion. I also value getting to know my patients and their loved ones, and seeing them through life's challenges and successes. I am a native North Carolinian coming back home and am proud to be part of the dedicated transplant team at Duke Health. Dr. Vranic is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. Her top areas of expertise are Chronic Kidney Disease, Liddle Syndrome, Pseudohypoaldosteronism Type 2, Cytomegalovirus Infection, and Kidney Transplant.

I am the medical director of the kidney and pancreas transplant programs at Duke Health, and I take care of patients undergoing kidney transplants. What led me into medicine was a passion for taking care of patients. Kidney transplant requires a very complex team, and I enjoy the collaboration among providers and the challenge of helping the team operate more efficiently. I love seeing patients and developing relationships with them. I always try to be very open and candid about the process and plan for care. When I evaluate patients, I always try to view them as a whole person to make sure that transplant is the right choice for them. I grew up in New Mexico but have lived in North Carolina for over two decades. I now consider myself a native North Carolinian and a die-hard Duke fan. In my free time, I am very active with my family and coach soccer and basketball. Dr. Ellis is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Cytomegalovirus Infection, Cytomegalic Inclusion Disease, End-Stage Renal Disease (ESRD), and Hemolytic-Uremic Syndrome.

Patrick Pun is a Nephrologist in Durham, North Carolina. Dr. Pun has been practicing medicine for over 24 years and is rated as an Advanced provider by MediFind in the treatment of Chronic Kidney Disease. His top areas of expertise are Chronic Kidney Disease, High Potassium Level, Low Potassium Level, End-Stage Renal Disease (ESRD), and Percutaneous Coronary Intervention (PCI).