Vlada · Research · 2026-09-28 · measured_from_estate
CMS released the 2027 Medicare Advantage Landscape file.
What does the CY2027 Medicare Advantage Landscape file show for today's members, by product type?
| Medicare Advantage individual plans, CY2026 vs CY2027 | Value |
|---|---|
| Members in a plan not offered in 2027 | 17.7 |
September 2026 CMS enrollment (H/R contracts, plans 001-799, excl. Cost and MMP) matched to the CY2026 and CY2027 Landscape files by contract, plan, state and county. 2026 values weight every member; 2027 values weight members whose plan is offered again in their county. · CMS Medicare Advantage Landscape CY2026 (202609) and CY2027 (202609); CMS Monthly Enrollment by Contract/Plan/State/County, September 2026. Audited cell by cell from the raw files (docs/knowledge/ma/landscape-day/2026-2027/TABLE-AUDIT.md). · 1 rows
The posted figure
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- Departing members are crosswalked into another plan or lose their plan; which is not known until the CMS 2027 crosswalk in early October.
- 2026 and 2027 values are weighted over different member sets (all members vs members in plans offered again).
- Employer group plans (plan ID 800+) are not in the Landscape file.
- Premiums as filed, before Extra Help.
- Same-store figures (plan offered in both years, same members, same weights) from the Day-One report's same-store tables; premiums rounded to whole dollars there.
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