In her new book, "The Empowered Patient: How to Get the Right Diagnosis, Buy the Cheapest Drugs, Beat Your Insurance Company, and Get the Best Medical Care Every Time" (Ballantine Trade Paperback Original / On-sale August 10, 2010), Elizabeth Cohen, CNN senior medical correspondent, shows readers how to ensure they get the best medical care for themselves and their families every time they set foot in the doctor's office.