Is Medicare a primary?
Hereof, how do you determine which insurance is primary?
The birthday rule states the primary payer is determined by the parent whose birthday falls first within the calendar year. In the event that both parents have the same birthday, the health insurance plan that has provided coverage longer is the primary payer.
Also asked, can I have Medicare Part B and private?
If you're eligible for Medicare and have private health insurance, there may be some situations when it may make sense to delay Medicare enrollment, especially in Medicare Part B. Before you decide to delay Part B enrollment, call your private insurance plan and ask them how your plan works with Medicare.
Usually, secondary insurance pays some or all of the costs left after the primary insurer has paid (e.g., deductibles, copayments, coinsurances). For example, if Original Medicare is your primary insurance, your secondary insurance may pay for some or all of the 20% coinsurance for Part B-covered services.