If You Already Get Social Security Benefits

You are automatically enrolled in Medicare.

You Want Medicare benefits, but do not have Social Security benefits?

You have to apply for Medicare by visitng your local social security office or calling
18007721213. No online applications for Medicare are currently being processed.

You Want Social Security Retirement Benefits AND Medicare?

Visit your local social security office or call 18007721213.

You can also apply online http://www.socialsecurity.gov/

To make sure there are no delays, specially with Medicare Part B, apply three months before your 65th birtday.

Thank you for clearing that up in such a neat and simple way; I think a lot of people needed a straighforward place to start even if they need more information down the line.