Related StoriesACA launches national effort to remove anti-competitive provision of Medicare lawMembers signed up for Medicare Advantage satisfied with their plans, research findsASTRO worried about proposed Medicare doctor payment cuts to radiation therapyEight institutions have more than 250,000 enrollees and cover 56 percent of the MA market up from 53 percent in August 2009. UnitedHealth Group and Humana jointly cover almost 33 percent of most Medicare Advantage enrollees, 0 up.8 percent from one year ago. With the first wave of baby boomer planned to reach 65 in 2011 and the open enrollment season beginning November 15, 2010, plans are actively preparing for what guarantees to be an exciting year.In addition, it leverages Banner's close working romantic relationships with other research businesses in Arizona. ‘This amazing research alliance will help galvanize the seek out answers to degenerative mind diseases,’ stated ASU President Michael Crow. ‘This is yet another exemplory case of how establishments in Arizona are at the forefront for groundbreaking analysis in age-related diseases. This new effort will be a magnet to appeal to more researchers, more businesses and even more resources to this urgent fight.’ Currently, more than 5 million Americans have problems with Alzheimer's. It has profound implications for Arizona, with a population greater than 1 million people over age 65 living today that’s likely to expand to 2.4 million by 2050.