Every fall, the mailbox fills up with glossy promises: $0 premiums, dental, vision, gym memberships, even a grocery allowance.
Medicare Advantage plans now cover more than half of all eligible seniors, and insurers spend hundreds of millions marketing them.
Traditional Medicare works like this: the government pays its share, and you cover the rest, unless you buy a Medigap supplement to plug the gaps.
You stay in the government program but let a private insurer administer it, and in exchange for extras, you accept a network, prior authorizations, and a cap on how much you can be billed.
If you switch from traditional Medicare to an Advantage plan and later want to switch back, you may face medical underwriting in most states.
A cancer diagnosis or a heart condition can make a supplement unaffordable or flat-out unavailable.
In a handful of states, you can switch freely; everywhere else, the door can quietly lock behind you.
Advantage plans advertise low or zero premiums, but a narrow network means your longtime cardiologist may be out of network next year.
Referrals and prior authorizations add delay.
A government watchdog has repeatedly found that some plans denied care that should have been covered, and appeals take time you may not have.
Advantage premiums can be $0, but cost-sharing arrives when you actually get sick: hospital stays, scans, specialist visits.
Annual out-of-pocket maximums for in-network care often run into the thousands.
A supplement typically costs more each month, but once you pay the premium, most of the big bills are gone.
You are essentially choosing between steady monthly costs and unpredictable ones.
The third trap is the add-ons themselves.
Dental, vision, and hearing benefits often come with low annual caps, sometimes a few hundred dollars, and a limited list of providers.
That free grocery card may be a few dollars a month, not a grocery budget.
Insurers know these perks sell plans, so they lead with them.
Advantage plans have become a profit engine for major carriers, and federal payments per enrollee run higher than for traditional Medicare.
Brokers earn commissions that can differ by plan, which is why some steer you toward what pays them, not what fits you.
It's just worth knowing when someone calls themselves a "licensed insurance agent" rather than your advocate.
The practical move is boring but effective.
Write down every doctor, every drug, and how often you travel or split time between states.
Price both paths for your actual health, not the brochure version.
Check whether your doctors are in-network and whether your drugs are on the formulary.
If you can afford a supplement and value predictability, run the numbers carefully before giving it up.
One more thing worth doing: talk to a State Health Insurance Assistance Program counselor, which offers free, unbiased help.
My take: Advantage plans are a legitimate option for healthy, cost-conscious seniors who understand the rules.
But the marketing is designed to make the trade-offs invisible, and the people selling them rarely mention the exit door.
Final Thoughts
Read the summary of benefits like it's a loan contract, because for your health and your wallet, that's basically what it is.