As the 2023 Medicare Open Enrollment season winds to a close, and beneficiaries and enrollees finalize their decisions, nearly half, 48.7%, of people eligible for Medicare have decided on Medicare Advantage plans, up from 46.1% in March of 2022. Based on the Centers for Medicare & Medicaid Services (CMS) enrollment data for March 1, 2023, total Medicare Advantage (MA), including Medicare Advantage with Prescription Drug Plan (MA-PD) membership, stood at 31,753,301 with a net gain of 2,276,490 members from March 1, 2022. Medicare stand-alone prescription drug plans (PDPs) covered 22,533,411 members as of March 1, 2023, a net decrease of 910,978 from the previous year. Surprisingly, nearly 80 percent of MA enrollees selected one of 10 insurers, out of the 294 offering plans in 2023. This brief assesses Medicare Advantage and PDP performance, market share and market penetration by state as of March 1, 2023.
Medicare Advantage (MA) Membership
Medicare Advantage (MA) market penetration remains strong; however, there is still abundant opportunity for growth with 48.7% of the nearly 65.2 million people eligible for Medicare enrolled in a MA plan. According to CMS Medicare Advantage enrollment reports aggregated by Mark Farrah Associates (MFA) in Medicare Business Online™, total Medicare Advantage plan enrollment, as of March 1, 2023, increased 9.8% from March 2022. The top ten companies, each with more than 300,000 members in this segment, collectively provided coverage for nearly 80% of the market. Most leading MA companies realized year-over-year growth with an overall net gain of 8.2%.
MA Leading Plan Performance
There are 294 insurers covering the MA marketplace in the United States, however nearly 80 percent of MA enrollees selected one of only 10 insurers. As of March 2023, UnitedHealth continues to dominate in this highly competitive segment. With over 9 million enrolled, UnitedHealth commands 28.5% of the MA market. Humana ranks second with nearly 18% market share and over 5.6 million lives. CVS maintains the third position, enrolling approximately 3.37 million, and Elevance Health (formerly Anthem) follows, with over 2 million lives. Together the top three insurers cover 56.9% of the MA market.