I Have Health Insurance Do I Need Medicare? 
If you have group coverage you may not need to pick up Medicare part B right away depending on the size of your group . Medicare coordinates with your health insurance . For smaller groups it will be primary , for larger groups it would be secondary . Primary means that Medicare pays first and your health insurance would act like a supplement . Secondary means that your insurance pays first and Medicare would just help pay any deductibles and copay 's . You do not need a Medicare supplement if you have group health insurance in most cases . If you have prescriptions covered at work do not pick up a Medicare Advantage plan or prescription drug plan without discussing it with your HR rep. You could get knocked off your group coverage and not be able to get it back . 