Millions of Medicare enrollees who buy stand-alone prescription drug plans will see their average monthly premiums rise by 50% in 2027, a new analysis finds. But enrollees can avoid the average increase — from $34 a month to $51 — by switching to lower-cost plans during the program’s open enrollment period, which runs through Dec. 7. Robert Travis Scott of Abingdon, Virginia, did just that in late October after he received a notice that his AARP-UnitedHealthcare Medicare drug plan premium would be increasing from $39.60 a month in 2026 to $121.90 in 2027. With just a little work checking...