Finantrix Atlas · Health insurer
Health Care Service Corporation
Enrolled 899,839 people in Medicare Advantage in October 2026, 2.5% of the total, across 28 contracts.
899,839
Medicare Advantage enrollment, October 2026
2.5%
share of all enrollment
+0.3%
change on the month
Month by month
As CMS counts enrollment by contract, grouped by parent organization.
| Month | Medicare Advantage | Drug plan (PDP) | Contracts |
|---|---|---|---|
| October 2026 | 899,839 | 2,783,941 | 28 |
| September 2026 | 897,246 | 2,776,732 | 28 |
| August 2026 | 895,677 | 2,770,603 | 28 |
| July 2026 | 893,353 | 2,760,742 | 28 |
| June 2026 | 891,297 | 2,754,494 | 28 |
| May 2026 | 890,731 | 2,756,289 | 28 |
| April 2026 | 885,262 | 2,752,298 | 28 |
| March 2026 | 882,783 | 2,747,456 | 28 |
| February 2026 | 880,669 | 2,737,798 | 28 |
| January 2026 | 863,545 | 2,751,642 | 28 |
| December 2025 | 961,171 | 3,376,665 | 30 |
| November 2025 | 962,666 | 3,369,524 | 30 |
From public regulatory filings, as filed; no figure is estimated. Updated 2026-10-28. Not investment advice.