Every fall, mailboxes fill with slick brochures promising free gym memberships, dental cards, and grocery allowances.
The pitches for Medicare Advantage plans sound almost too good, and in some ways they are.
What those ads rarely mention is who pays for the extras, and how the math changes the moment you actually get sick.
Medicare Advantage, also called Part C, is run by private insurers who get paid a set amount per member by the government.
In exchange, they bundle hospital, doctor, and often drug coverage into one plan.
Supplemental coverage, known as Medigap, works the opposite way: you keep original Medicare and buy a separate policy that covers much of what Medicare leaves behind, like the 20 percent coinsurance on many services.
The trade-off is not really about benefits.
Advantage plans cap your yearly out-of-pocket costs, but they do it through networks, prior authorizations, and referral rules.
Medigap plans cost more upfront in premiums, yet they let you see almost any provider nationwide who accepts Medicare, with far fewer hoops to jump through.
Here is where the sales pitch gets slippery.
Those "extra" benefits on Advantage plans are not gifts.
Insurers fund them partly by managing care tightly, negotiating rates, and in some cases denying or delaying services.
A 2023 federal review found widespread problems with prior authorization denials that should have been approved.
That does not mean every plan is bad, but it does mean the freebies have a funding source, and it is usually the care itself.
A Medigap Plan G for a 65-year-old might run $110 to $200 a month in some states and far more in others, on top of the standard Part B premium, which sits at $185 monthly in 2025 for most people.
Advantage plans often advertise $0 premiums, but the trade-off shows up later in copays, hospital stays, and specialist visits.
The trap many people miss is the switching window.
In most states, Medigap insurers can deny you or charge more based on your health once you are past your initial enrollment period.
If you start with Advantage to save money and later get diagnosed with something serious, you may find the door back to a supplement closed or expensive.
A handful of states, including New York and Connecticut, offer more flexibility, but most do not.
The marketing machine is enormous, and brokers often earn higher commissions on Advantage plans than on supplements.
That does not make the advice wrong, but it is worth knowing when someone calls themselves a "senior benefits advisor." The practical move is boring but effective.
Write down every doctor you see, every drug you take, and how often you travel or snowbird.
Then price both paths honestly, including the worst-case year, not the average one.
A plan that looks cheap in a healthy year can look very different after one hospital stay.
Our take: this is less a product comparison than a bet on your own future health and patience.
If you can afford the premiums and want predictability, a supplement plus a drug plan is often the simpler road.
Final Thoughts
If cost is tight and you are comfortable with networks and approvals, Advantage can work, but go in with your eyes open, not because a brochure promised a free gym membership.