Free guide · Florida-specific
The Turning 65 Checklist.
Eighteen months. That is the window where the decisions you make about Medicare, Social Security, and retirement coverage start to lock in for life. Some can be revisited later. Some cannot.
Below is a month-by-month checklist of what to think about and when. We have written it for South Florida specifically, because the rules and the market here are not the same as everywhere else.
12 months before
−12
The planning window opens. Most people do not realize this is when they should start thinking about Medicare.
Confirm your Medicare eligibility date.
For most people, eligibility starts the first day of the month you turn 65. If your birthday falls on the 1st, eligibility starts the month before. Verify the date in your Social Security record so you know exactly when your enrollment window opens.
Decide whether you will keep working.
If you plan to keep working past 65 with employer health coverage, the rules for delaying Medicare enrollment are different than if you are retiring. The penalties for getting it wrong are permanent. This is the single biggest decision to clarify early.
Inventory your current health and prescriptions.
Make a list of every medication you take, every doctor and specialist you see, and every chronic condition you manage. This list drives every plan comparison. The more accurate the list, the better the plan choice.
6 months before
−6
Decisions begin to firm up. The Medicare-Advantage-vs-Supplement question becomes the central conversation.
Make the Advantage vs. Supplement decision.
This is the most consequential choice. In Florida, the path you choose at 65 is largely a one-way door — switching from Advantage to Supplement later requires medical underwriting and is often denied. Start the comparison now, not the month before your birthday.
Decide on Social Security timing.
Medicare and Social Security are linked but separate. You can take Medicare at 65 and delay Social Security to 67, 70, or somewhere in between. The choice affects your monthly benefit for life. This is a financial planning question, not an insurance question — but the timing matters.
Talk to HR if you are still working.
Confirm in writing how your employer plan coordinates with Medicare. Companies with fewer than 20 employees typically require Medicare to be primary; larger companies usually let your employer plan stay primary. Get this answer in writing from HR before you make the enrollment decision.
3 months before
−3
The Initial Enrollment Period opens. This is when you can sign up for Medicare and pick a plan.
Enroll in Medicare Parts A and B.
If you are not already receiving Social Security, you have to enroll yourself through ssa.gov. If you are receiving Social Security, you may be enrolled automatically. Verify either way. The Initial Enrollment Period is seven months — the three months before your 65th birthday month, your birthday month, and the three months after.
Apply for your Supplement or Advantage plan.
The application has to be timed so coverage starts the same day your Part B starts — typically the first of your birthday month. Applications submitted too early or too late create gaps or delays.
Pick a Part D drug plan.
If you went with a Supplement plan, you need a separate Part D plan. If you went with Advantage, drug coverage is usually bundled in. Run your full medication list against the available plans — the cheapest premium is rarely the cheapest total cost.
Birthday month
0
Coverage starts. The decisions made earlier go into effect.
Confirm coverage is in effect.
You should have a Medicare card and a card from your Supplement or Advantage carrier in hand. Confirm with your doctors that they have the new coverage on file. Verify that any ongoing prescriptions are being processed under the new plan.
Set up automatic premium payments.
Most plans accept automatic withdrawal from a checking account or deduction from your Social Security benefit. Late premium payments can cause coverage termination, and reinstating coverage is more painful than setting up auto-pay correctly the first time.
Update related accounts.
Notify your existing health insurance, your employer (if applicable), your pharmacy, and any other parties who hold your coverage information. The transition is smoother when you do this proactively rather than reactively.
3 to 6 months after
+3 / +6
The Supplement guaranteed-issue window starts to close. The decisions you have made are largely locked in.
Verify the plan is working as expected.
By month three, you have probably used the new coverage. Check that claims are processing correctly, that your medications are being filled at the expected copays, and that the doctors you wanted are still in network if you went Advantage.
Note the closing of the guaranteed-issue window.
Six months after your Part B effective date, your guaranteed right to buy a Supplement plan without medical underwriting closes. This is the point of no easy return in Florida. If you went Advantage and had any second thoughts, this is the moment when those second thoughts become harder to act on.
Each fall after
Oct 15 – Dec 7
The Annual Election Period. This is when you can change plans for the next calendar year.
Review the Annual Notice of Change.
Every September, your plan sends a notice describing what is changing for the next year — premiums, copays, formulary, network. Read it. Do not assume next year's plan is the same as this year's.
Consider whether the plan still fits.
Your medications change. Your providers change. The plans change. The plan that was right for you last year may not be the right one this year. Most people never review, and most people are paying more than they need to.
Switch if it makes sense.
You can change Advantage plans, switch from Advantage to Original Medicare, change Part D plans, or move between Advantage carriers during the Annual Election Period. Supplement plan changes outside the initial enrollment window may require medical underwriting in Florida, but other moves are open.
Next step
Walk through your specific timeline with someone.
The checklist is the structure. The conversation is the part where it actually gets useful — your dates, your doctors, your decisions, in person, before any of it locks in.