Finantrix Atlas · Health insurer
Corewell Health
Enrolled 279,626 people in Medicare Advantage in January 2026, 0.8% of the total, across 4 contracts.
279,626
Medicare Advantage enrollment, January 2026
0.8%
share of all enrollment
+9.4%
change on the month
Month by month
As CMS counts enrollment by contract, grouped by parent organization.
| Month | Medicare Advantage | Drug plan (PDP) | Contracts |
|---|---|---|---|
| January 2026 | 279,626 | 17 | 4 |
| December 2025 | 255,515 | 17 | 4 |
| November 2025 | 254,954 | 17 | 4 |
| October 2025 | 254,620 | 17 | 4 |
| September 2025 | 254,334 | 17 | 4 |
| August 2025 | 254,180 | 17 | 4 |
| July 2025 | 253,802 | 17 | 4 |
| June 2025 | 253,688 | 17 | 4 |
| May 2025 | 253,558 | 17 | 4 |
| April 2025 | 253,422 | 17 | 4 |
| March 2025 | 253,426 | 17 | 4 |
| February 2025 | 253,095 | 17 | 4 |
From public regulatory filings, as filed; no figure is estimated. Updated 2026-10-28. Not investment advice.