Sun City Independent, November 23, 2016, Page 10 Once again Banner Boswell Medical Center in Sun City was named one of the nation's 50 Top Cardiovascular Hospitals for 2017. They have been recognized through the years for their superior care and treatment of heart patients, and have recently invested in a number of important enhancements including state-of-the-art surgical suites and transcatheter aortic valve replacement surgery.