Welcome to the Upper East Side Nephrology section containing nephrologists in 10022, 10065, 10021, 10075, 10028 and 10128 zip codes. Nephrologists are concerned with kidney disorders, high blood pressure, and fluid and mineral balance. They consult with surgeons about kidney transplantation. Nephrology is a subspecialty of internal medicine. Be sure to hold your mouse over any bold-italicized listings for a special pop-up description.