As the name implies, it is a case where you can opt for Medicare and Medicaid at the same time. This is not unusual, a lot of people have these two on their health plans, and you can have different insurance providers nowadays. Medicare acts as your primary coverage and Medicaid as the secondary. Look through what benefits they both offer, because as we said above, there are services where Medicare cannot help, but Medicaid can, for example, long-term care.