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AARP's Medicare Question and Answer Tool

If I have TRICARE, do I need to have Part D?


En español |If you have TRICARE, you don’t need to enroll in Medicare Part D. This is because most people with TRICARE entitled to Part A must have Part B to keep their TRICARE prescription drug benefits. If you do decide to enroll in Part D, your Medicare drug plan pays first and TRICARE pays second. If you are in a Medicare Advantage plan, the Medicare plan and TRICARE coordinate the payments.

For more information, visit or call the TRICARE pharmacy program at 877-363-1303.


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