Nephrology nurses, also called renal dialysis nurses, treat patients that suffer from kidney disease that has been caused by substance abuse, diabetes, hypertension and more, and patients that are at-risk for developing kidney disease. The major professional organization for nephrology nurses is the American Nephrology Nurses Association (ANNA). The Nephrology Nursing Certification Commission (NNCC) maintains the following credential programs for registered nurses: Certified Nephrology Nurse Nurse Practitioner (CNN-NP), Certified Nephrology Nurse (CNN) and Certified Dialysis Nurse (CDN). The U.S. Bureau of Labor Statistics predicts excellent, overall job growth for registered nurses. The median registered nurse salary is $62,450.