[header] How to sign up for medicare [title] Find out if you are eligible. [step] American citizens who are 65 years of age and older are generally eligible for medicare. You also need to have lived in the united states for at least five calendar years prior to receiving benefits. 
You also need to have been employed for 10 years in a workplace that was covered by medicare. If you are not sure if that's you, you can contact your employer to ask.