WASHINGTON (AP) — For the first time in a decade, Americans will pay less next year on monthly premiums for Medicare’s Part B plan, which covers routine doctors’ visits and other outpatient care. The rare 3% decrease in monthly premiums — a savings of $5.20 for most — comes after millions of Medicare beneficiaries endured a tough year of high inflation and a dramatic increase in those premiums this year. Most people on Medicare will pay $164.90 monthly for Part B coverage starting next year. The decrease in Medicare fees comes as many older people await news about big increases next year to their Social Security checks, which are often used to pay for Medicare premiums.