Xenia Sumin

Kidney health rarely tops the list of small-talk topics—until it’s the only thing that matters. Xenia Sumin specializes in exactly that quiet corner of medicine, offering nephrology care on the Upper East Side. The practice sits at 100 E 77th St, a block where pre-war apartment facades meet the steady pulse of York Avenue traffic.

Nephrologists don’t chase flashy diagnoses; they track electrolytes, blood pressure, and the slow rhythms of dialysis schedules. Here, the focus stays on chronic kidney disease, hypertension management, and electrolyte imbalances—details that shape daily routines more than any headline condition. The neighborhood’s mix of long-time residents and transient hospital staff means the waiting room hums with stories that never make it into medical charts.

Questions about referrals or follow-ups can be directed to (212) 434-2000. For directions, the map at this link pins the entrance between a dry cleaner and a café that’s been serving the same egg sandwich since the nineties.