Raising the Medicare eligibility age from 65 to 67 would be phased in gradually. This would require future seniors to either work longer or get private health insurance, increasing costs for Medicaid and Obamacare. Analysis from the Kaiser Family Foundation estimates around 5 million total beneficiaries would be affected by the higher eligibility age if implemented in 2014 along with provisions of the Affordable Care Act. Adopting a chained CPI to calculate Social Security benefits could reduce average annual benefits from around $17,220 to as low as $20,527 by 2022 according to data from the Washington Post, Bureau of Labor Statistics and Census Bureau.