Prairie Lakes Nephrology provides diagnosis and treatment for patients with kidney diseases. Our nephrology program also provides service for patients with disorders like electrolyte disturbance and hypertension and operates three dialysis units located in Watertown, SD; Sisseton, SD; and Ortonville, MN. Dr. Tina Melanson, nephrologist, certified physician assistant Kari Fleming and certified nurse practioner Kris Goens, are committed to providing comprehensive care to residents in northeastern South Dakota and western Minnesota.