77 million, or 22 percent of the U.S. population.
By Bob Herman | September 16, 2015. Roughly 17.7 million seniors and disabled Americans are enrolled in Medicare Advantage, and many more are expected to sign up for the private Medicare health plans when the annual enrollment period begins next month.  “In FY 2014, we expect to serve almost 116 million Medicare, Medicaid and CHIP beneficiaries, more than one-in-three Americans,” said CMS. According to the Census Bureau, there are now 316,795,196 people residing in the United States. The approximately 116,000,000 people CMS predicts will be enrolled in Medicare, Medicaid or CHIP in 2014 equals 36.6 percent of the total population. However, the CBO has estimated that even with the implementation of Obamacare there will still be 44 million Americans who are uninsured in 2014.  In 30 years, the number of Americans covered by Medicare will nearly double to 77 million, or 22 percent of the U.S. population. Beneficiaries born in 1900, who enrolled in Medicare in its first year, 1966, are celebrating their 100th birthday this year. There are families with two generations, parent and child, both of whom are enrolled in Medicare today; some families have three generations enrolled in Medicare. 1 Eligibility to choose a MA plan: People who are enrolled in both Medicare A and B, pay the Part B monthly premium, do not have end-state renal disease, and live in the service area of the plan. 2  Formerly know as Medicare+Choice or Medicare Health Plans. 3  Benefits are provided by private insurance companies.  Using data from the American Community Survey 2012 5-Year Sample, this map presents information on Native American households with at least one household member enrolled in Medicare and with incomes below 150% of the Federal Poverty Level (FPL), which makes them potentially eligible for many core benefits.  (CNSNews.com) – A record 70.4 million people were enrolled in the Medicaid health care program for the poor in fiscal year 2011, according to government figures provided to CNSNews.com. That figure equals about 22 percent of the population, which means there was one person on Medicaid for every 5 Americans in 2011. Figures provided to CNSNews.com by the Centers for Medicare and Medicaid Services (CMS), the agency that oversees the two health care entitlements, reveal an ever-expanding Medicaid program. From 2005 to 2011, total enrollees grew by more than 10 million people, going from 60.1 million in 2005 to 70.4 million in 2011. In 2015, the majority of the 55 million people on Medicare are covered by traditional Medicare, with 31% enrolled in a Medicare Advantage plan (Figure 1). Since 2004, the number of beneficiaries enrolled in private plans has more than tripled from 5.3 million to 16.8 million in 2015.  In the United States, Medicare is a national social insurance program, administered by the U.S. federal government since 1966, currently using about 30 private insurance companies across the United States. Medicare provides health insurance for Americans aged 65 and older who have worked and paid into the system. It was the primary payer for an estimated 15.3 million inpatient stays in 2011, representing 47.2 percent ($182.7 billion) of total aggregate inpatient hospital costs in the United States. Medicare serves a large population of elderly and disabled individuals. In 2009, 62.9 million Americans were enrolled in Medicaid for at least one month, with an average enrollment of 50.1 million. In California, about 23% of the population was enrolled in Medi-Cal for at least 1 month in 2009-10. 2008 average cost per senior was reported as $14,780 (in addition to Medicare), and a state by state listing was provided. In a 2010 national report for all age groups, the per enrolled average cost was calculated to $5,563, and a listing by state and by coverage age i Founder, Georgia Medicare Plans, Atlanta,GA. Currently about 48 million people are on Medicare. Most are age 65 or older, but some are on Medicare due to disability. If you qualify for Medicare you can stay in the original system and purchase a Medigap plan to cover your out of pocket Part A and B expenses. 
http://www.modernhealthcare.com/article/20150916/NEWS/150919908 http://www.cnsnews.com/news/article/terence-p-jeffrey/single-payer-centers-medicare-and-medicaid-will-provide-43-all-health http://www.cms.gov/Research-Statistics-Data-and-Systems/Statistics-Trends-and-Reports/TheChartSeries/downloads/35chartbk.pdf http://www.ncpssm.org/Medicare/MedicareFastFacts https://www.ncoa.org/economic-security/benefits/visualizations/native-visualization/ http://cnsnews.com/news/article/record-704-million-enrolled-medicaid-2011-1-out-every-5-americans http://kff.org/medicare/fact-sheet/medicare-advantage/ https://en.wikipedia.org/wiki/Medicare_(United_States) https://en.wikipedia.org/wiki/Medicaid http://www.insurancelibrary.com/medicare-insurance/how-many-people-are-currently-enrolled-in-medicare
how many americans enrolled in medicare