Your client, Jim, wishes to enroll in a Medicare Advantage plan. What must you tell him regarding his current enrollment?

To enroll in a Medicare Advantage plan, it is essential that individuals are enrolled in both Medicare Part A and Part B. Medicare Advantage, also known as Part C, is a private insurance product that provides an alternative way to receive Medicare benefits. These plans must cover all services that Original Medicare covers (Parts A and B), meaning that both components are necessary for eligibility.

When someone like Jim seeks to enroll in a Medicare Advantage plan, being enrolled in Medicare Part A allows them to receive hospital and inpatient care benefits, while Part B covers outpatient services, preventative care, and physician visits. Without enrollment in both parts, Jim would not fully meet the requirements to join a Medicare Advantage plan.

Thus, simply having either Part A or Part B does not suffice; enrollment in both is a prerequisite for the Medicare Advantage plan. Therefore, the correct response highlights this critical requirement for Jim's enrollment process.