KFF Health News Jan 29 2026 Medicare Advantage health plans are blasting a government proposal this week that would keep their reimbursement rates flat next year while making other payment changes. But some health policy experts say the plan could help reduce billions of dollars in overcharges that have been common in the program for more than a decade. On Jan. 26, Centers for Medicare & Medicaid Services officials announced they planned to raise rates paid to health plans by less than a tenth