Medicare Advantage Open Enrollment Opens: Key Changes and Enrollment Numbers to Watch in 2026

Medicare Advantage open enrollment began on February 5, 2026, and will remain open until March 31, giving over 65 million Medicare beneficiaries the opportunity to review and change their coverage. This year’s enrollment period comes as nine major insurers have either exited the Medicare Advantage market or scaled back operations in select regions, including UnitedHealthcare, Humana, and Aetna, following regulatory and financial pressures. The shift has prompted increased competition among remaining providers, with 12 new plans entering the market—particularly in rural and underserved areas—offering expanded dental, vision, and telehealth benefits. Average premiums for 2026 plans have risen by 7.2% compared to 2025, with the national median premium now at $23.50 per month, up from $21.90. However, 84% of plans continue to offer $0 premiums, a key factor for cost-conscious enrollees. Market analysts note that plan quality scores have improved across the board, with 73% of 2026 plans receiving a 4 or 5-star rating from the Centers for Medicare & Medicaid Services (CMS), up from 68% in 2025. This uptick is attributed to enhanced care coordination and preventive services. The changes are expected to influence enrollment trends, especially among seniors in high-cost states like California and New York, where plan availability dropped by 14% compared to last year. Beneficiaries are being urged to act quickly, as early enrollment is linked to better outcomes. Those who delay risk missing out on lower-cost plans or losing access to preferred providers. The CMS has also introduced a new digital tool that compares plans based on local provider networks, drug formularies, and out-of-pocket costs, available via the official Medicare website and mobile app.