Thomas Chi

University of California, San Francisco

Thomas Chi, MD
Associate Professor
Associate Chair for Clinical Affairs
UCSF Department of Urology


Dr. Thomas Chi, MD, graduated as a President's Scholar from Stanford University with a BA in Human Biology and Masters degrees in both Sociology and Music. He earned his medical degree from the University of California, San Francisco School of Medicine where he also completed urology residency and a fellowship in Endourology and Laparoscopy under the mentorship of Dr. Marshall L. Stoller.

During his fellowship, Dr. Chi was awarded grant funding from the National Institutes of Health and the American Urological Association Urology Care Foundation to research the fundamental mechanisms underlying the formation of urinary stones.

Clinical Interests

He joined the UCSF faculty of the Department of Urology in 2013 where his clinical interests include the care of patients with urinary stone disease and those who meed minimally invasive surgery. He specializes in the performance of endoscopic, laparoscopic, and percutaneous surgeries, as well as HoLEP. He has established ReSKU, the Registry for Stones of the Kidneys and Ureter, the first automated kidney stone registry of its kind for tracking patient clinical outcomes and is an internationally recognized specialist in the use of ultrasound in the management of kidney stones to minimize patient radiation exposure.

Research Interests

In addition to his clinical interests, Dr. Chi supervises an NIH-funded translational science lab where he leads a cross-disciplinary research team. His research focuses on understanding how the genetic and microbial environment of the kidney drive kidney stone formation and developing new medical preventative interventions. He has developed a novel model fruit fly for the study of kidney stones and has published over 50 peer-reviewed articles and book chapters spanning both basic science as well as epidemiologic approaches centered around improving the care of patients with urinary stone disease.

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