Ohioans on Medicare that did not sign up for Part A (hospital insurance) and/or Part B (medical insurance) during their initial enrollment period, and do not qualify for a special enrollment period, can sign up for Medicare during the Jan. 1 to March 31 general enrollment period. Coverage begins on the first day of the month after signing up.
For Ohioans with a Medicare Advantage Plan, the Medicare Advantage open enrollment period, also from Jan. 1 to March 31, provides an opportunity to switch back to Original Medicare or change to a different Medicare Advantage plan.