MedicareInsights — data release briefings One briefing per CMS release cycle: what changed in the new data, the biggest market shifts, and links to updated answers. https://medicareinsights.org/briefings/ 2026-06-15T00:00:00Z MedicareInsightshttps://medicareinsights.org June 2026 briefing — February 2026 enrollment ingested https://medicareinsights.org/briefings/2026-06/ 2026-06-15T00:00:00Z CMS Medicare Monthly Enrollment for February 2026: national MA+other share at 57.8%, Puerto Rico leads at 82.1%, Florida metros drive county momentum.