One of the ways that Medicare has tried to keep costs down with the new Medicare Part D plan is to allow multiple private insurance companies to offer their product, and compete for your business. Since Medicare Part D began, these insurance companies have used a variety of marketing materials to convince Medicare recipients to pick their plan. Although this marketing may be informative, it may also be designed to influence you to choose a plan that may not be the best one for you. That is why it is VERY IMPORTANT to take your time, compare plans and understand your choices before you make any decisions. It is important to know that Medicare has strict marketing rules that these companies must follow, including rules governing telemarketing, door-to-door solicitations and e-mail.