First of all we should be clear about the concept of medicare supplement plan. It is an insurance policy that is mostly sold by private companies and helps you to pay off some of the health care costs. In this case, all such costs are covered that are otherwise uncovered under Original Medicare plans. These may include the co-payment, deductibles and coinsurance. Even you can get coverage for the services that are not covered under Original Medicare. Numbers of private companies offer medicare supplement plans such as Aarp Medicare Supplement Plan. Every company has different policies and terms and conditions. Therefore you need to choose your medicare supplement plan very carefully and wisely so as to get benefited. Here are some important points to consider while choosing any such policy.