A recent study suggests that more than two-third of US population is being served by the ACOs. According to Department of Health and Human Services' the latest approval of ACOs in January brings the total number of Medicare ACOs to 368, up from 259 last year. Currently there are total 522 ACOs serving both Medicare and non-Medicare patients. According to CMS, 10% of Medicare beneficiaries will receive their healthcare from ACOs. The research also found that Medicare ACOs are serving near about 33 million non-Medicare patients. Though there is a significant growth in ACO participation, Mr. Niyum Gandhi, a partner in Oliver Wyman's Health & Life Sciences practice and one of the firm's experts on ACOs, criticized the fact by saying "The process of shifting American healthcare to a new, sustainable model is nowhere near the finish line. On the other hand, these numbers mean we have a critical mass lined up at the starting gate." To know more, follow the article written by Oliver Wyman (leader in management consulting) at: http://www.marketwatch.com/story/accountable-care-organizations-now-serve-up-to-17-of-americans-2014-04-23?reflink=MW_news_stmp