Medicare - The official U.S. government site for Medicare. This site enables you to sign up or change plans, learn about Medicare coverage choices and more. Call 1-800-MEDICARE to reach Medicare by phone.
Social Security Administration - The United States Social Security Administration is an independent agency of the U.S. federal government that administers Social Security, a social insurance program consisting of retirement, disability and survivor benefits. Call 1-800-772-1213 to reach Social Security by phone.