AMA: 5 health insurers with the highest market share in the most MSA-level markets

  1. Anthem (77 MSAs)
  2. Health Care Service Corp. (42 MSAs)
  3. UnitedHealth Group (27 MSAs)
  4. Florida Blue (22 MSAs)
  5. Highmark (21 MSAs)
Notes: MSAs are metropolitan statistical areas. Based on enrollment data from the AMA’s annual assessment of market concentration in the health insurance industry: "Competition in Health Insurance: A Comprehensive Study of US Markets."

Source: The American Medical Association, September 17, 2019 - https://www.ama-assn.org/press-center/press-releases/competition-commercial-hea…