These are all crooks with the intention to get your personal information. Unfortunately, some elderly trustful folks are taken advantage of; Medicare doesn't call out and ask for personal information, the only time that they will ask for any such information is when you call them. And the only information they verify is your name and Medicare number. Please make sure that your family members are aware of this, and report this number to Medicare at: 1_800-MEDICARE. Thanks. Be safe and secure, don't give up your privacy to any one.