Rainy Lake Specialty Clinic hosts a nephrology outreach clinic for Sanford Health. Nephrologists specialize in diagnosing and treating kidney disease and disorders in patients of all ages—from newborns to adults. Dr. Daniel Louvar specializes in diagnosing and treating kidney disease, hypertension, and kidney transplants. Kidney conditions requiring treatment include sudden loss of renal (kidney) function, blood in the urine, loss of protein in the urine, kidney stones, chronic urinary tract infections, and hypertension (high blood pressure).