Dr. George M. Nassar, MD, FACP, FASN

Expert Publications

• Images in clinical medicine. Brown tumor in end-stage renal disease.
• Clotted arteriovenous grafts: a silent source of infection.
• Reciprocal regulation of LTA(4) hydrolase expression in human monocytes by gamma-interferon and interleukins 4 and 13: potential relevance to leukotriene regulation in glomerular disease.
• Infectious complications of the hemodialysis access.
• Occult infection of old nonfunctioning arteriovenous grafts: a novel cause of erythropoietin resistance and chronic inflammation in hemodialysis patients.
• Infectious complications of old nonfunctioning arteriovenous grafts in renal transplant recipients: a case series.
• Presence of a failed kidney transplant in patients who are on hemodialysis is associated with chronic inflammatory state and erythropoietin resistance.
• Salvage of a severely dysfunctional arteriovenous fistula with a strictured and occluded outflow tract.
• What should nephrologists do to maximize the use of arteriovenous fistulas?
• Endovascular treatment of the "failing to mature" arteriovenous fistula.
• Intravenous methoxy polyethylene glycol-epoetin beta for haemoglobin control in patients with chronic kidney disease who are on dialysis: a randomised non-inferiority trial (MAXIMA).
• Postdialysis outcomes associated with consistent anemia treatment in predialysis patients with chronic kidney disease.
• Endovascular management of the "failing to mature" arteriovenous fistula.
• Preventing and treating inflammation: role of dialysis access management.

Media Releases

Get to know Nephrologist Dr. George M. Nassar, who serves patients in Houston, Texas.

Well liked by his patients who find him personable, attentive, caring, effective, and professional, Dr. Nassar is a nephrologist at The Kidney Institute in Houston, Texas. Collectively, he and his colleagues provide reputable inpatient and outpatient nephrology services in the Texas Medical Center and in North Houston and The Woodlands.

Trained in all aspects of general Internal Medicine and nephrology, Dr. Nassar has 25 years of experience in managing acute and chronic kidney disease, polycystic kidney disease, diabetic kidney disease, electrolyte abnormalities, lupus nephritis, fluid overload states, hypertension, kidney stone disease, dialysis, and kidney transplantation. In addition, he has gained an incredible amount of expertise in interventional aspects of dialysis access management.

Among his academic titles, he is a Professor of Clinical Medicine at the Institute of Academic Medicine at Houston Methodist Hospital (6/2018-present), a Professor of Clinical Medicine at Weill Cornell Medicine (12/2018-present), a Clinical Educator at Texas A&M University (2015-present), and on the key faculty of the Nephrology Fellowship Program at Houston Methodist Hospital (2012-present).

Locally, Dr. Nassar’s main hospital practice is in the Houston Methodist Hospital but he also manages patients in Baylor St. Luke’s Medical Center and Kindred Hospital-Houston Medical Center. His outpatient clinic is in The Kidney Institute located in Scurlock Tower on Fannin Street in the Texas Medical Center. He also has privileges in many Houston based dialysis units.

The doctor’s acclaimed career in medicine began after he earned his medical degree from the American University of Beirut Faculty of Medicine in Lebanon in 1988. He then went on to perform his residency in internal medicine and his fellowship in nephrology at the Emory University School of Medicine in 1992 and 1995, respectively. 

With a commitment to excellence, Dr. Nassar is board-certified in internal medicine and nephrology by the American Board of Internal Medicine (ABIM). The ABIM is a physician-led, non-profit, independent evaluation organization driven by doctors who want to achieve higher standards for better care in a rapidly changing world. 

Continuously advancing his efforts, he is an active member of the American College of Physicians, the American Society of Nephrology (Fellow), the Harris County Medical Society, and the American Society and Diagnostic and Interventional Nephrology (ASDIN).

With longstanding expertise in multicenter clinical trial research, Dr. Nassar has published several manuscripts on various aspects of kidney disease management and dialysis access management. He has also been a national speaker and consultant on hypertension, congestive heart failure, metabolic bone disease, diabetic kidney disease, dialysis vascular access, and anemia treatment in patients with kidney failure. 

Nephrology is a specialty of medicine and pediatrics that concerns itself with the kidneys. It is the study of normal kidney function and kidney disease, the preservation of kidney health, and the treatment of kidney disease, from diet and medication to renal replacement therapy. Nephrologists have advanced training in treating kidney disease. They diagnose and treat kidney failure, as well as help patients by prescribing medications, offering special diet advice, and coordinating dialysis care or kidney transplantation when it becomes necessary. 

Among his various accolades, Dr. Nassar has been the recipient of Compassionate Doctor Recognition (2014, 2015), Patients’ Choice Award (2014, 2016, 2018), and On-Time Doctor Award (2014, 2016, 2018). He is also the recipient of first abstract awards on his research in dialysis access from the ASDIN (2014, 2019).

On a more personal note, Dr. Nassar speaks fluent English and Arabic. He also manages to speak some Spanish, and tries to learn more Spanish with every Spanish-Speaking patient-encounter. 

Recommended Articles

• What Causes Rhabdomyolysis?

  Rhabdomyolysis is a condition in which the muscles are rapidly broken down resulting in the release of myoglobin — the muscle protein — into the blood. This is a rare condition, and the release of myoglobin into the blood can lead to damage of kidneys. It is mostly caused by muscle injury and...

• How Do Kidney Stones Develop?

  Kidney stones are a condition that affects around 15 percent of the world's population. For reasons unknown, the condition's prevalence has increased over the last 30 years. Kidney stones more often affect men than women. What are kidney stones?Kidney stones or renal lithiasis is the formation of...

• What is a Cluster Headache?

  Headaches that recur two to three times during a short period of time are known as cluster headaches. This may last for few weeks, to months. These headaches often occur after sleep and recur throughout the day. It usually appears during the same time of the year, or season of the year. It may...

• Leukocytes in Urine: What Does Leukocyte Esterase in Urine Mean?

  What are leukocytes?White blood cells (WBCs) are also called as leukocytes. They protect the body from infections by fighting foreign invaders such as viruses, bacteria, fungi, or parasites. Phagocytes and lymphocytes are forms of white blood cells (WBCs).Phagocytes engulf foreign particles like...

• Which Doctors Treat Diabetes?

  There are many healthcare providers who can diagnose and treat diabetes. While most people may see a primary care doctor if they start having symptoms of diabetes, other physicians and specialists can also help monitor the condition.Doctors who treat diabetesThe following are doctors and specialists...

• How Is Glomerulonephritis Diagnosed?

  GlomerulonephritisGlomerulonephritis is the inflammation of kidney filters called glomeruli. These filters are made up of tiny blood vessels that help remove excess fluids, waste from the bloodstream, and electrolytes. This condition can happen on its own or may occur as part of chronic diseases,...