Mealey's ( June 11, 2015, 3:55 PM EDT) -- WASHINGTON, D.C. — The Patient Protection and Affordable Care Act (ACA) prevented nearly 15,000 hospital deaths and 560,000 patient harms and saved $4.1 billion in costs in 2011 and 2012, according to a May 7, 2014, U.S. Department of Health and Human Services report....