Generally, no one should call you or come to your home uninvited selling Medicare-covered products. Don’t give your personal information to someone who does this. Only give personal information to doctors, other providers, and plans approved by Medicare, and to people in the community who work with Medicare, like your State Health Insurance Assistance Program (SHIP) or Social Security. Call 1-800-MEDICARE (1-800-633-4227) if you aren’t sure if a provider is approved by Medicare. TTY users should call 1-877-486-2048.