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After a difficult personal experience with a kidney stone that required shock wave treatment, I resolved to take care of my fellow patients. I knew the condition was interesting and often neglected, and I felt I needed to do something about it. My background in physiology meant that I was well prepared to study kidney stones.

At ��ɫtv Langone, I am committed to patient care and research about kidney stones. I am a professor of medicine and physiology at ��ɫtv Grossman School of Medicine. I also see patients who have calcium stones, uric acid stones, struvite stones, cystinuria, and other genetic causes of kidney stones.

I’m honored to have held several positions of leadership in the field of nephrology. I was the associate editor of the Clinical Journal of the American Society of Nephrology (CJASN) for five years, and president of the Research on Calculus Kinetics Society (the R.O.C.K. Society) and the New York Society of Nephrology. I also served as vice chair of the American Urological Association’s guideline panel on the medical management of kidney stones, representing the American Society of Nephrology.

I currently serve on the medical advisory board of the National Kidney Foundation serving Greater New York, the scientific advisory board of the Oxalosis and Hyperoxaluria Foundation, and board of directors of the International Cystinuria Foundation.

More recently, I completed the Climate Change and Health Certificate Program from the Yale School of Public Health. I currently represent the American Society of Nephrology at the International Society of Nephrology's Global Environmental Evolution in Nephrology and Kidney Care, or GREEN-K initiative.

As chief of nephrology and medical director of the hemodialysis unit at the VA New York Harbor Healthcare System, I take care of patients who have chronic kidney disease and end-stage kidney disease, with a broad range of causes.

I am the principal investigator of the Rare Kidney Stone Consortium’s Cystinuria Project, which was funded by the National Institute of Diabetes and Digestive and Kidney Diseases and the National Center for Advancing Translational Sciences from 2009 to 2019. I’m honored to have been dubbed “Stone Crusher of the Year” by the Oxalosis and Hyperoxaluria Foundation in 2014 and “Nephrologist of the Year” by the American Kidney Fund in 2016.