Medicare Advantage vs Medigap: Choosing Your Path

One decision, two very different paths

When you become eligible for Medicare, you are choosing between two structures:

• Original Medicare + Medigap + Part D: pay more monthly, pay very little at the point of care, see any provider nationwide.
• Medicare Advantage: pay little or nothing monthly, pay copays as you use care, stay within a network.

Both are legitimate. They suit different people, and the right answer depends on your health, your finances, your travel habits and your tolerance for uncertainty.

Cost structure

Medicare Advantage front-loads savings and back-loads risk. Many plans have a $0 premium beyond Part B. You then pay copays per visit and per service until you hit the plan's out-of-pocket maximum.

Medigap does the opposite. You pay a monthly premium, often $120 to $300 depending on plan letter, age and location, and in exchange, a Plan G leaves you with very little to pay beyond the annual Part B deductible.

A healthy year is cheaper on Advantage. A year with a major hospitalisation and a long rehabilitation is usually cheaper on Medigap.

Provider freedom

Medigap works anywhere in the country that accepts Medicare, with no networks and no referrals. This matters a great deal if you travel frequently, split the year between two states, or want unrestricted access to a specific specialist or cancer centre.

Medicare Advantage plans use networks. HMOs generally require in-network care except in emergencies; PPOs allow out-of-network care at higher cost. Networks are also re-negotiated annually, so a doctor who is in network this year may not be next year.

Prescription drugs

Most Medicare Advantage plans include Part D. Medigap never does, so you must buy a standalone Part D plan alongside it, or face a permanent late-enrollment penalty.

The extras question

Medicare Advantage plans commonly add dental, vision, hearing, fitness memberships, over-the-counter allowances and sometimes transportation. Medigap adds none of these; you would buy standalone dental and vision separately.

These extras are genuinely valuable, but check the annual maximums. A dental benefit capped at $1,000 covers a cleaning and a filling, not a crown.

The part people underestimate: switching later

You can move from Medigap to Medicare Advantage fairly easily.

Going the other direction is often hard. Once your six-month Medigap Open Enrollment Period has passed, most states let Medigap carriers apply medical underwriting, which lets them review your health history and decline you or charge more.

So the practical situation is this: if you choose Medicare Advantage at 65 and develop a serious condition at 72, you may find you cannot get a Medigap policy at any reasonable price. The door you walked through may not open again.

A handful of states, including New York, Connecticut, Massachusetts and Maine, have rules requiring guaranteed issue or continuous open enrollment for Medigap. If you live in one of those states, this risk is much smaller.

A framework for deciding

Medigap tends to suit you if you:

• Travel often or live in two states
• Want maximum predictability and provider choice
• Can comfortably absorb the monthly premium
• Have, or expect, significant ongoing medical needs

Medicare Advantage tends to suit you if you:

• Are comfortable using a network
• Want low or no monthly premium
• Value the dental, vision and hearing extras
• Have confirmed your doctors and medications are covered

Before you commit

Confirm your doctors are in network for the specific plan you're considering. Check your exact medications against the formulary. Understand your state's Medigap underwriting rules. And be honest about which risk bothers you more: a predictable monthly premium, or an unpredictable bad year.