TRICARE for Life is a top-notch health care plan designed for all dual Medicare / TRICARE eligible service retirees. This includes members who are part of the reserve components of the military, even those who are receiving retired pay. There are no enrollment fees for the TRICARE for Life program. Those who want this plan, other than family members of retirees, must purchase Medicare Part B and pay all of the premiums associated with Part B. This is a pretty useful plan in that Medicare pays the initial costs of any medical needs, and any existing health insurance covers the rest, and anything it does not cover will be covered by TRICARE for Life. With TRICARE for Life you can still receive treatment in military treatment facilities on a space available basis. Even if you are in need of a service not covered by Medicare, such as prescription drugs, TRICARE will cover it in the same way that it does all of its other plans, and determine what part of said services you need to pay.