Providers 2018-04-19T09:37:19+00:00

Our Providers

At DKS of Fredericksburg we pride ourselves on having excellent kidney physicians who provide top quality clinical care to our patients for conditions like hypertension, chronic kidney disease, anemia, and more. Learn more about your provider below.

Ethan S. Ko, DO

Specializing in Nephrology and Hypertension

While Korean by heritage, Dr. Ethan Sung Ko is a true Virginia native who grew up in the Northern Virginia suburbs. Dr. Ko received his Bachelors of Science at James Madison University in Harrisonburg.

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Reginald Joseph, MD

Specializing in Nephrology and Hypertension

Dr. Reginald Joseph is excited to be a part of the DaVita Kidney Specialists of Fredericksburg team. Dr. Joseph is a New Jersey native who has dedicated his life to serving his community through compassionate healthcare.

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Usman J. Rahmat, MD

Specializing in Nephrology and Hypertension

Born and raised in the suburbs surrounding Washington, DC and currently residing in Fredericksburg, VA with his wife and children – Dr. Rahmat has always called the DMV area home.

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Xiaoru Yang, MD, PhD

Specializing in Nephrology and Hypertension

Dr. Yang is board certified in Internal Medicine and Nephrology and is proud to serve the Fredericksburg area as a physician dedicated to kidney disease. She is currently a member of the American Society of Nephrology.

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