Who Is The Medicare Carrier For Ohio? 
Medicare Part A and Part B is provided by the Social Security Administration for every state , including Ohio . To apply for Medicare in Ohio , you can call the Social Security Administration at 800-663-4227 -LRB- 800-MEDICARE -RRB- . If you are looking for Medicare Supplemental Insurance , there are a number of companies that sell this type of coverage in Ohio . You may be able to get a quote through your own health insurance provider . 