Fact Based List:

Five Counties with the Highest Medicare Advantage Enrollment

  1. Los Angeles County, CA - 210,802
  2. Maricopa County, AZ - 198,294
  3. Miami-Dade County, FL - 164,690
  4. Orange County, CA - 162,036
  5. San Diego County, CA - 142,217

Source: Centers for Medicare & Medicaid Services: MA State/County Penetration Report- April 2011, Research, Statistics, Data & Systems, , April 2011
Source URL: https://www.cms.gov/home/rsds.asp