Fact Based List:

CMS: Medicare Shared Savings Program Statistics, by year

  1. 2021: 477 ACOs with 10.7 million assigned beneficiaries
  2. 2020: 517 ACOs with 11.2 million assigned beneficiaries
  3. 2019: 487 ACOs with 10.4 million assigned beneficiaries
  4. 2018: 561 ACOs with 10.5 million assigned beneficiaries
  5. 2017: 480 ACOs with 9.0 million assigned beneficiaries
  6. 2016: 433 ACOs with 7.7 million assigned beneficiaries
  7. 2015: 404 ACOs with 7.3 million assigned beneficiaries
  8. 2014: 338 ACOs with 4.9 million assigned beneficiaries
  9. 2012/2013: 220 ACOs with 3.2 million assigned beneficiaries

Source: CMS, January 2021
Source URL: https://www.cms.gov/files/document/2021-shared-savings-progr...
Notes: as of January 1st of each year