I am getting all these things in the mail as I soon turn 65. Some I am not sure about. One that I got today is something about MyMedicare.gov. Is this a legit site? I do not want to give my information to a stranger. The website looks like the real deal but wanted to know for sure. The Words on the envelope had CMS. I have already bought my Supplement so what else would I need. I also have my Medicare card. Thanks for any help. Oldtrig