Springfield (Mo.) Nephrology Associates. Springfield Nephrology Associates, which started as a small, family-oriented organization in 1996, is committed to detecting, treating and preventing kidney disease through diagnostic testing and up-to-date treatment techniques. In 2015, Fortune ranked SNA No. 8 on its "100 Best Workplaces for Women" list. The organization also pays for its employees' professional licensing fees, continuing education classes and seminars. For staff members that live in rural areas, the organization supplies a mobile hotspot for internet connectivity, enabling them to work remotely when needed.