Medicare Advantage (Part C), how it works

Once your parent enrolls in Medicare Advantage, their Parts A and B still exist, but instead of every visit being billed directly to CMS, the entire experience is handled by a private plan. They get one insurance card, one phone number to call, and one cost structure.

Most Medicare Advantage plans bundle Part D (prescription drugs) into the plan. That's called an MAPD. Many also include extras that Original Medicare doesn't offer (limited dental, vision, hearing, fitness). The exact extras vary by plan and change each year. It's worth reviewing the details with a licensed agent before enrolling.

Two conditions:

• Active Parts A and B. Both parts of Original Medicare must be in force before the Advantage plan can take effect.
• Residence in the plan's service area. Medicare Advantage plans are local. A plan available in Chicago may not be available in Mount Prospect, and vice versa.

This is the biggest difference between Medicare Advantage and Original Medicare. Original Medicare lets your parent see any doctor or hospital in the U.S. that accepts Medicare. Medicare Advantage plans have networks, a defined list of doctors, specialists, hospitals, and pharmacies the plan has contracts with.

Two main network structures:

• HMO (Health Maintenance Organization). Must use in-network providers only. Usually requires a Primary Care Physician (PCP) who refers to specialists. Out-of-network care isn't covered except in emergencies.
• PPO (Preferred Provider Organization). Network still applies, but out-of-network care is also covered at higher cost. Often no referrals needed. More flexibility, slightly higher premium.

Other structures exist (HMO-POS, SNP, PFFS), but HMO and PPO are the most common.

Most Medicare Advantage plans require prior authorization for certain services (advanced imaging like MRI or CT, some planned procedures, expensive specialty drugs). That means the plan has to approve the service before the doctor performs it; otherwise the cost can land on the patient.

Original Medicare has far fewer of these. It's another difference worth understanding.

For families with parents who spend winters in Florida, summers in Poland, or have family in other states, Medicare Advantage can be complicated. The plan's network is local; out-of-network coverage varies. Most plans cover only emergencies outside the service area; routine care with a doctor in another state may not be covered.

Medicare Advantage enrollment isn't available year-round. Four main windows:

• IEP (Initial Enrollment Period). Seven months around your parent's 65th birthday.
• AEP (Annual Election Period). October 15 through December 7; the new plan takes effect January 1.
• MA-OEP (Medicare Advantage Open Enrollment Period). January 1 through March 31; one chance to change for people already on an Advantage plan.
• SEP (Special Election Periods). Triggered by qualifying life events (move, loss of coverage, getting Medicaid, etc.).

Full breakdown of each window on the Enrolling in Medicare page.

One of the most important decisions in Medicare. Here are the trade-offs, not a verdict on which is "better," because that depends on your parent's situation.

Medicare Advantage works well when:

• Your parent's regular doctor is in the plan's network.
• They don't travel out of state often.
• They prefer one card, one plan, one phone number.
• A lower monthly premium matters more than network freedom.

Original Medicare + Medigap + Part D works well when:

• Freedom to see any doctor across the U.S. matters.
• Your parent travels a lot.
• They have complex medical history and need easy specialist access.
• Cost predictability matters more than a low monthly premium.

This isn't a "once and forever" choice. Many people change strategies as life changes. That's why it's worth reviewing the plan annually to make sure it still fits.

We never recommend a specific plan without knowing your parent's situation. We see too many people who enrolled in a plan from a TV ad and then found out their doctor wasn't in network, their prescriptions sat on a higher tier than expected, or a specialist they needed required prior authorization the plan wouldn't grant.

Our process always starts with questions: who is your parent's primary care doctor? What medications are they taking? Where do they live most of the year? How many hospital visits in the last two years? With those answers in hand, we narrow the plans that actually make sense.

Jakub Słomczewski Licensed Insurance Agent We verify your parent's doctors and drugs before we ever pick an Advantage plan.

Working with our agency costs your family nothing. Agents are paid directly by the insurance carriers.