How Do I Know Which Medicare Plan I Have? 
Your Medicare card should indicate if you have Part A and or B . You also may have a Medicare supplement plan -LRB- Medigap -RRB- and your Medigap ID card and policy will indicate the plan you have . If you have Part D -LRB- drug coverage -RRB- you will need to contact your agent or carrier to determine the benefits . Same for a Medicare Advantage plan . You can also call Medicare , or check mymedicare.gov 