James V. Donadio Jr., MD, now retired, was a nephrologist in the Mayo Clinic Division of Nephrology, Department of Medicine, in Rochester, Minnesota, for thirty-two years. He also served as chairman of the Division of Nephrology for nine of those years and rose to the teaching rank of Professor of Medicine in the Mayo Clinic College of Medicine. Dr. Donadio completed his Internal Medicine and Nephrology (Kidney Disease Specialty) Residency at Mayo Clinic after earning his medical degree from the Indiana University School of Medicine and completing an internship at Marion County General Hospital in Indianapolis, Indiana. The completion of his medical residency in 1966 coincided with his military draft into the United States Army Medical Corps. He served in Vietnam for one year and completed his military commitment at the Walter Reed Army Medical Center in Washington, D.C., the following year.