Vlada · Research · 2026-10-08 · derived
2027 Star Ratings are out: 71% of members are in 4+ star plans. The bonus changed hands.
When the 2027 Star Ratings came out, did the share of Medicare Advantage members in 4-star plans change, and for which companies?
| Share of Medicare Advantage members in plans rated 4+ stars, 2026 vs 2027 | 2026 | 2027 |
|---|---|---|
| All Medicare Advantage36.3M members | 71.13 | 71.21 |
| UnitedHealth (UNH)9.3M members | 82.75 | 68.46 |
| Humana (HUM)7.2M members | 41.88 | 95.49 |
| CVS / Aetna (CVS)4.2M members | 85.04 | 71.11 |
| Kaiser2.1M members | 100 | 100 |
| Elevance (ELV)1.9M members | 56.59 | 47.26 |
| Centene (CNC)919K members | 18.32 | 9.77 |
| HCSC897K members | 52.43 | 13.18 |
| BCBS Michigan674K members | 92.42 | 100 |
| Devoted533K members | 72.6 | 78.29 |
| SCAN462K members | 100 | 96.04 |
| Alignment (ALHC)299K members | 100 | 23.77 |
| Molina (MOH)223K members | 5.36 | 9.84 |
| Clover (CLOV)158K members | 100 | 100 |
Share of each parent company's September 2026 Medicare Advantage members (H and R contracts) whose contract is rated 4 stars or more. 2026: members in their 2026 contract with its 2026 rating (CMS restated July 22, 2026). 2027: the same members mapped through the CMS 2027 plan crosswalk to their 2027 contract, with its 2027 rating; terminated plans excluded; members of consolidated plans take the surviving contract's rating. Overall star; Part C summary for the 7 contracts without drug coverage. Unrated contracts are left out of the denominator. · CMS 2027 Star Ratings Data Tables (Oct 8, 2026; sha256 2704032d3f72...), CMS 2026 Star Ratings Data Tables (summary restated July 22, 2026), CMS Plan Crosswalk 2027 (Oct 1, 2026), CMS Monthly Enrollment by Plan, September 2026. · 14 rows
The posted figure
Read with
- September 2026 enrollment is held fixed for both years; 2027 enrollment will differ after open enrollment.
- Members in plans with a service area reduction are kept with their contract; some of them will be in counties the plan leaves.
- This is the share of members in bonus-eligible plans, not bonus dollars; the post makes no dollar claim.
- Parent companies as named in the CMS enrollment file (e.g. Aetna under CVS Health, the former Cigna Medicare book under HCSC).
- 2027 ratings were read from the CMS release file before the Vlada tables finished loading them.
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