Turning 65 and Medicare: A Month-by-Month Action Plan

Turning 65 and navigating Medicare for the first time involves more moving parts than most people expect, multiple enrollment windows, separate applications for different parts, a choice between fundamentally different coverage types, and decisions that carry permanent financial consequences if made in the wrong order or missed entirely. Most people start looking into it about three months out and realize they are already behind. This guide lays out what to do and when, starting six months before your birthday.

Bryce's Take

The single biggest mistake I see at 65 is waiting too long to start the process. Three months out feels like plenty of time, and then you realize you need to choose between Medigap and Advantage, compare Part D plans for your specific medications, coordinate your employer coverage end date, and apply for Part B before your window closes. Start six months out. Call me at six months out.

Six months out, learn and prepare

Six months before your 65th birthday is the right time to start understanding your options rather than making enrollment decisions. Use this period to understand the difference between Original Medicare plus Medigap and Medicare Advantage, review your current health coverage and understand how it interacts with Medicare (particularly if you have employer coverage or are still working), check whether you are currently receiving Social Security benefits (if yes, you will be auto-enrolled in Parts A and B), understand your HSA situation if you contribute to one, and gather information about your doctors, medications, and any specialists you see regularly. This knowledge phase prevents rushed decisions later.

Three months out, apply and decide

Three months before your 65th birthday is when to take action. If you are not receiving Social Security, apply for Medicare Parts A and B at ssa.gov or your local Social Security office. You can apply online, by phone at 1-800-772-1213, or in person. Part A and Part B require separate enrollment actions in some cases. If you plan to enroll in Medicare Advantage, begin comparing plans in your zip code at medicare.gov. If you plan to enroll in Medigap, contact carriers for quotes and prepare to apply once your Part B is active. Six months of Medigap open enrollment begins the month you are both 65 and enrolled in Part B, applying early in this window is important.

The month you turn 65, confirm and verify

Your Medicare coverage typically begins the first day of your birth month if you enroll on time. Your Medicare card should arrive before your birthday if you enrolled three months in advance. Confirm your card's arrival, check that the effective dates are correct, and make note of your Medicare Number. Notify your primary care physician and any specialists that you are now on Medicare. If you are transitioning from an employer plan, coordinate the end date of that coverage with your Medicare start date to avoid any gap.

Immediately after enrollment, supplemental coverage

In your first month of Medicare, enroll in your supplemental coverage before your first medical appointment. If you chose Medigap, apply and get approved before dropping any previous coverage. Remember that Medigap does not include drug coverage, enroll in a standalone Part D plan simultaneously. Part D has its own separate enrollment, separate carriers, and separate premiums. If you chose Medicare Advantage, verify that your specific doctors are in the plan network before your first appointment and confirm that your medications are on the plan formulary at acceptable cost-sharing.

Schedule your Welcome to Medicare visit

Within the first 12 months of your Medicare Part B enrollment, you are entitled to a free Welcome to Medicare preventive visit. Schedule this with your primary care physician. It establishes a baseline health assessment, reviews your medications, identifies risk factors, and creates a prevention plan. It is distinct from a standard office visit and should be scheduled specifically as the Welcome to Medicare visit to ensure it is billed correctly with no cost-sharing. After the first year, you transition to the Annual Wellness Visit, also free, once per year.

Annual enrollment review, every October

Medicare is not a set-and-forget decision. Every October, review your Annual Notice of Change for any Advantage or Part D plan changes. During the Annual Enrollment Period from October 15 to December 7, you can switch plans for January 1 coverage. Review whether your doctors are still in-network, your medications are still on formulary at acceptable costs, and whether the plan's premium and benefit structure still fits your needs. The landscape changes enough year to year that this annual review is genuinely worth 30 minutes of attention.

Bryce Casson

Licensed Independent Medicare Broker

Bryce Casson is an independent Medicare insurance broker who works with every major carrier. He does not represent any single insurer, which means his recommendations are based on what actually fits each client's situation, not on commissions or quotas.