Dr. Melissa Isbell is a nephrologist practicing in San Antonio, TX. Dr. Isbell specializes in the care and treatment of the kidneys. As a nephrologist, Dr. Isbell most typically treats conditions like kidney stones, chronic kidney disease, acute renal failure, polycystuc kidney disease, high blood pressure and more. Nephrologists are also experts on kidney transplantation and dialysis. They are usually referred to by primary care physicians for problems related to the kidneys, and while they can perform tests to diagnose kidney disorders, they do not perform surgeries.