Medicare Advantage or Medigap? In Florida, One of These Doors Locks Behind You

1. The two ways to take Medicare

Once you are on Medicare, there are two ways to carry it, and they are mutually exclusive. On one road you keep Original Medicare — Part A and Part B, paid directly by the federal programme — and because Original Medicare pays roughly eighty per cent of covered costs with no annual ceiling on your share, most people add a Medigap supplement to absorb the rest, plus a separate Part D plan for prescriptions. On the other road you take a Medicare Advantage plan, in which a private insurer takes over your Part A and Part B entirely, usually folds in drug coverage and extras like dental or vision, and runs your care through a network with copays and an annual out-of-pocket maximum.

Both are real Medicare. Neither is a scam, and the marketing on each side would have you believe the other is. The genuine difference is not quality but structure: Advantage trades monthly cost for network rules and case-by-case approvals, while Medigap trades monthly cost for predictability and freedom of choice among providers. What almost nobody explains at the point of sale is that the two roads are not equally easy to leave.

2. What each path actually costs you

Set the brochures aside and put the two paths next to each other on the questions that actually decide the year. The figures in your own case depend on the plan and the policy you choose, so what follows compares how each path behaves rather than quoting prices.

The question	Medicare Advantage	Original Medicare + Medigap
Monthly cost	Usually lower, sometimes $0 beyond your Part B premium	Higher — a supplement premium on top of Part B
Which doctors	A network; going outside it costs more or is not covered	Any provider in the country who accepts Medicare
Referrals and approvals	Often required, and prior authorisation is common	No plan approval — if Medicare covers it, the supplement follows
Cost when you get ill	Copays each time, up to an annual out-of-pocket maximum	Largely predictable; the supplement absorbs most of the share
Extras (dental, vision, fitness)	Commonly bundled in	Not included; bought separately if you want them
Prescriptions	Usually built into the plan	A separate Part D plan you choose yourself
Travelling or living part of the year elsewhere	Tied to the service area, with emergency cover away from it	Works anywhere in the country Medicare is accepted
Can you change your mind later?	Yes — you can leave each autumn	Leaving is easy; getting back in may require passing medical underwriting

Read the last row twice. Everything above it is a trade-off you can weigh with a calculator, and every one of those trade-offs can be revisited next autumn. The last row is the one that behaves differently, and it is the reason this article exists.

3. The six months nobody explains

Here is the rule that decides the whole question, and it is one sentence long. Your Medigap Open Enrollment Period is the six-month stretch beginning on the first day of the month in which you are both 65 or older and enrolled in Medicare Part B. During those six months an insurer cannot refuse to sell you any Medigap policy it offers, cannot make you answer health questions to qualify, and cannot charge you more because of a condition you already have.¹

When the six months end, that protection ends with them. Medicare.gov puts it plainly: after this period there is no federal guarantee that an insurance company will sell you a Medigap policy, and if you are able to buy one it may cost more because of past or present health problems. The same guidance warns that if you drop a Medigap policy, in most cases you will not be able to get it back. This window is not annual. It does not reopen at 70, or 75, or the year your health changes.²

4. Why Florida makes this sharper

A number of states have softened this by law. Some run a continuous open enrollment; others operate a "birthday rule" letting existing Medigap holders move to a comparable policy each year without health questions. If you have read that Florida is one of them, you have read something that is not true — and it is worth being blunt about, because acting on it could cost you a policy.³

• Florida has no birthday rule. State law ties guaranteed issue to the six-month window at 65 with Part B, and to specific replacement and termination situations. It creates no annual right for an existing policyholder to change carriers without underwriting.
• Outside a protected situation, a Florida application can be underwritten. Expect health questions, and expect the answers to affect whether you are offered a policy and at what price.
• Pre-existing conditions have a ceiling. Florida law does not let a Medicare supplement insurer exclude benefits for a pre-existing condition for longer than six months.
• If you came to Medicare before 65 through disability or ESRD, you get another opening. Florida gives those members a further open enrollment when they turn 65, and a new policy must be applied for to obtain the lower premium.

None of this makes Medicare Advantage the wrong choice in Florida. Broward, Miami-Dade and Palm Beach have some of the most competitive Advantage markets in the country, and for many people here the value is real. It simply means the choice deserves to be made with the exit route in view rather than discovered later.

5. The exits that do exist

The picture is not hopeless, and it would be dishonest to imply the door has no handle. Federal law lists the situations in which an insurer cannot turn you down — guaranteed issue rights — and several of them are exactly the circumstances people find themselves in.⁴

• The trial right at 65. If you joined a Medicare Advantage plan when you first became eligible for Medicare at 65, and within your first twelve months you decide you would rather have Original Medicare, you may buy any Medigap policy sold by an insurer in your state. This is the single most valuable protection available, and it expires on the anniversary.
• The trial right after dropping a supplement. If you dropped a Medigap policy to try Medicare Advantage for the first time and you have been in the plan less than a year, you may buy that policy back, provided the same company still sells it.
• Your plan leaves, or you leave its area. If the plan stops offering care where you live, or you move out of its service area, you have a guaranteed issue right to a defined set of Medigap plans — but only if you move to Original Medicare rather than to another Advantage plan.
• Timing is part of the right. These rights run to a calendar, generally allowing an application from sixty days before your coverage ends until no more than sixty-three days after it ends. Missing the window forfeits the right.

One more point of detail, because it catches people out: Medigap Plans C and F are closed to anyone who became eligible for Medicare on or after January 1, 2020. If you were eligible before that date you may still be able to buy them. Everyone else looks at Plans D and G, which provide the same benefits without covering the Part B deductible.

6. What Annual Enrollment can and cannot do

Now put the windows in order, because the common mistake is assuming that a window which lets you leave one thing must also let you join another. They are different rights, granted by different rules, and only some of them travel together.⁵

The window	What it actually lets you do
By September 30	Your plan’s Annual Notice of Change should have reached you, setting out what changes in January.
October 15 – December 7	Annual Enrollment. Change plan, change drug coverage, or move between Original Medicare and Medicare Advantage in either direction. Coverage starts January 1.
Medigap, at any time	You may apply whenever you like — but outside a protected window the insurer may use medical underwriting and may decline you.
January 1 – March 31	The Medicare Advantage window. If you are in an Advantage plan you get one chance to switch to another or return to Original Medicare. It does not carry a Medigap guaranteed issue right with it.
Your six months at 65	The Medigap Open Enrollment Period. No health questions, no refusal, no surcharge for your medical history. It happens once.

The gap between rows two and three is the whole problem in miniature. Annual Enrollment and the Advantage window both let you walk out of a Medicare Advantage plan. Neither of them, on its own, obliges a Medigap insurer to let you in.

7. Who each path tends to suit

With the mechanics clear, the choice becomes a question about your life rather than about the products. In our experience across Broward, Miami-Dade and Palm Beach, the pattern looks roughly like this — though a pattern is not a recommendation, and yours may sit somewhere else entirely.

Medicare Advantage tends to suit people who:

• want a low monthly cost and can absorb copays as they arise;
• are content to use a network, and have checked that their own doctors and hospitals are in it;
• value the bundled extras — dental, vision, hearing, fitness — enough to count them;
• stay largely in one service area through the year;
• are comfortable with prior authorisation as the price of a lower premium.

Original Medicare with a supplement tends to suit people who:

• would rather pay a known premium than face unpredictable costs in a bad year;
• have specialists or a hospital they will not change, or expect significant care ahead;
• spend part of the year in another state, or travel often;
• do not want treatment decisions routed through plan approval;
• are at or near 65 now, and can use the six-month window while it is open.

If you are reading this in the months around your 65th birthday, you are in the rarest position in Medicare: both doors are open, and neither insurer can ask you a single question about your health. That is not a reason to buy a supplement. It is a reason to decide deliberately rather than by default.

8. How to decide before December 7

Annual Enrollment closes on December 7, and the useful work is mostly done before you look at a single plan comparison. In order:

• Work out which window you are in. Are you inside your six months at 65? Inside a twelve-month trial right? Facing a plan that is leaving your county? Each of those answers changes what is available to you, and they are the first thing to establish.
• Read the Annual Notice of Change your plan sent in September. It lists what your current plan is doing in January — premium, drug tiers, network, prior authorisation. You cannot judge whether to leave without knowing what staying looks like.
• List the doctors and hospitals you are not willing to lose, and check each one against any plan you are considering. Confirm it with the practice as well as the plan directory.
• Add up a bad year, not an average one. Compare the supplement premium you would pay against the out-of-pocket maximum you could reach. Insurance is bought for the bad year.
• If a supplement is part of your thinking, apply in the right order. Getting a Medigap acceptance before you give up the coverage you have is a very different position from doing it the other way round.

9. Common questions

10. Sources

1. Medicare.gov — When can I buy a Medigap policy? States that the Medigap Open Enrollment Period is the 6-month period starting the first day of the month you are 65 or older and signed up for Part B, and that after this period there is no federal guarantee that an insurance company will sell you a Medigap policy, and that if you are able to buy one it may cost more due to past or present health problems.
2. Medicare.gov — Can I switch or drop my Medigap policy? Advises that if you drop your Medigap policy, in most cases you will not be able to get it back, and that a Medigap policy cannot pay Medicare Advantage deductibles, copayments, coinsurance or premiums.
3. Florida Statutes § 627.6741, Issuance, cancellation, nonrenewal, and replacement (Medicare supplement policies), together with the Florida Department of Financial Services consumer overview of Medicare Supplement Insurance. Florida ties guaranteed issue to the six-month window at 65 with Part B and to specified replacement and termination situations; it creates no annual switching right, and it limits pre-existing condition exclusions to six months.
4. Centers for Medicare & Medicaid Services and the National Association of Insurance Commissioners — Choosing a Medigap Policy: A Guide to Health Insurance for People with Medicare (CMS Product No. 02110). Sets out the federal guaranteed issue right situations, including both trial rights, the right arising when a plan stops serving your area or you move out of it, the sixty-day and sixty-three-day application limits, and the closure of Plans C and F to those first eligible for Medicare on or after January 1, 2020.
5. Medicare.gov — Open Enrollment and Joining a plan. Medicare Open Enrollment runs October 15 to December 7 with coverage beginning January 1; the Medicare Advantage Open Enrollment Period runs January 1 to March 31 and allows a switch to another Medicare Advantage plan or a return to Original Medicare.

Disclaimer: JCKC Financial Services is a licensed independent insurance brokerage and tax preparation firm. This article is for general educational purposes only and is not tax, legal, medical, or financial advice, nor a substitute for guidance from a licensed professional about your specific situation. We do not offer every plan available in your area. Any information we provide is limited to those plans we do offer in your area. We are not connected with or endorsed by the United States government or the federal Medicare program. Plan benefits, costs and networks change annually and vary by plan. Medigap availability, pricing and underwriting rules vary by insurer and by state. Please contact Medicare.gov, 1-800-MEDICARE (TTY 1-877-486-2048), or your local SHINE counsellor to discuss your options.