Home › Find a Provider › John Sy, MD

UCI Health will see you now: Welcome to our new co-workers and patients from Fountain Valley, Lakewood, Los Alamitos and Placentia Linda! 

« Return to Search
Dr. John E. Sy is a board-certified UCI Health nephrologist.

John E. Sy, MD

Specialties

Nephrology, Internal Medicine

MyChart patient portal offers a convenient and secure way to manage your healthcare online. Use MyChart to schedule appointments, request prescription renewals, send messages to your care team and more.
Access MyChart
Medical Services
Certifications
  • American Board of Internal Medicine, Internal Medicine - General
  • American Board of Internal Medicine, Nephrology
Language
  • English
Gender
Male
Medical School
University of Texas Southwestern
University of Texas Southwestern Medical School
Residency
Olive View-UCLA Medical Center
Olive View - University of California Los AngelesInternal Medicine
Fellowship
UC San FranciscoNephrology
UCSFNephrology
Professional Positions
  • Associate Professor — Division of Nephrology, Hypertension and Kidney Transplantation, Department of Medicine, UCI School of Medicine
More Information
Dr. John E. Sy is a board-certified UCI Health nephrologist who specializes in the diagnosis and treatment of kidney diseases and disorders. His clinical interests include chronic kidney disease, acute kidney injuries, polycystic kidney disease, electrolyte disorders and dialysis.

He earned his medical degree at the University of Texas Southwestern Medical School in Dallas. He completed a residency in internal medicine at Olive View-UCLA Medical Center in Sylmar, Calif., and a fellowship in nephrology at UC San Francisco, where he also received a master’s degree in clinical research. 

His research interests include the impact of frailty on patients with chronic kidney disease, clinical outcomes of dialysis patients and anticoagulation among patients with chronic kidney disease. 

Sy, who also is fluent in Hokkien Chinese, believes in working with his patients to improve their quality of life. 

He sees patients in Orange.

UCI Medical Center
101 The City Drive South
Orange, CA 92868