Understanding Medicare doesn't have to be complicated. We break down every part, every plan type, and every enrollment deadline so you can make confident decisions about your healthcare coverage.
If you're approaching 65 or becoming eligible for the first time, here's what you need to know.
All U.S. citizens are eligible for Medicare at age 65. Non-citizen permanent residents also qualify after five or more years of residency.
You may also qualify before age 65 if you:
You'll be automatically enrolled in Medicare Parts A and B. However, you must work with a licensed agent to elect Part C (Advantage) or Part D (prescription drug) coverage.
Your IEP is a 7-month window that begins three months before your 65th birthday, includes your birthday month, and continues for three months after.
Example: If you turn 65 in June, your IEP runs from March through September.
This is critical: If you miss your Initial Enrollment Period, you may face permanent late-enrollment penalties that increase your premiums for the rest of your life.
If you miss the IEP, the General Enrollment Period (January 1 – March 31 each year) allows late enrollment, but coverage won't begin until the following month and penalties may apply.
Medicare is made up of several parts, each covering different aspects of your healthcare. Here's what each part does.
Part A covers inpatient care when you're admitted to a hospital or skilled care facility. Most people don't pay a monthly premium for Part A if they (or their spouse) paid Medicare taxes while working.
Part B covers medically necessary services and preventive care. You pay a monthly premium for Part B (standard is $185/month in 2026, adjusted for income).
Part C is an alternative to Original Medicare (A + B). Offered by private insurance companies, Advantage plans bundle Parts A and B — and often include Part D and extras like dental, vision, and hearing.
Part D helps cover the cost of prescription medications. Offered through private insurance companies, these plans have formularies (lists of covered drugs) that vary by provider.
With Original Medicare (Parts A + B), you can see any Medicare-accepting provider nationwide, but you'll pay deductibles and 20% coinsurance with no out-of-pocket cap. Many people add a Medigap plan and a Part D plan.
With Medicare Advantage (Part C), you get bundled coverage through one plan, often with lower costs and extra benefits, but you must use the plan's provider network. Both paths have pros and cons — we'll help you decide.
An all-in-one alternative to Original Medicare, offered by private insurance companies.
Medicare Advantage (Part C) lets you receive your Medicare benefits through a private insurance company rather than directly through the government. These plans must cover everything Original Medicare covers, and most include additional benefits.
To enroll, you must have both Medicare Part A and Part B, and you'll continue to pay your Part B premium. You must also live within your plan's service area.
Health Maintenance Organization — You choose an in-network primary care physician who coordinates your care and referrals. Typically lower costs, but less flexibility to see out-of-network providers.
Preferred Provider Organization — You can see any provider, with lower costs for in-network doctors. No referral needed for specialists. More flexibility, but higher premiums.
Consider your preferred providers, local hospitals, travel habits, budget, and how much flexibility matters to you. We compare plans side-by-side to find your best fit.
Fill the gaps in Original Medicare — covering deductibles, copays, and coinsurance.
Medicare Supplement (Medigap) plans are sold by private insurance companies and help cover the out-of-pocket costs that Original Medicare doesn't pay — like deductibles, copays, and coinsurance.
Unlike Medicare Advantage, Medigap plans work alongside Original Medicare. You can see any doctor who accepts Medicare, anywhere in the country.
There are 10 standardized Medigap plans identified by letters: A, B, C, D, F, G, K, L, M, and N. No matter which insurance company sells the plan, plans with the same letter offer the same benefits.
The most popular plans today are Plan G and Plan N, which offer strong coverage at competitive premiums.
Routine dental, hearing, and vision exams; glasses or contacts; hearing aids; retail prescription drugs; long-term care or custodial care. You'll need separate coverage for these.
Your best opportunity to enroll in a Medigap plan is during your 6-month Medigap Open Enrollment Period, which begins the month you turn 65 and are enrolled in Part B.
During this window, insurance companies cannot deny you coverage or charge you more due to health conditions.
This window does not come back. Unlike Medicare's annual enrollment, the Medigap open enrollment period is a one-time opportunity. If you miss it, you may face medical underwriting and could be denied coverage.
If you qualified for Medicare before age 65 due to a disability, you get a second Medigap open enrollment window when you turn 65.
Voluntary prescription drug coverage that helps manage your medication costs.
Medicare Part D is a voluntary prescription drug program offered through private insurance companies. It helps you pay for medications at more affordable rates and provides protection against catastrophic drug costs.
Each plan has a formulary (list of covered drugs) that varies by provider, so it's important to check that your medications are covered before you enroll.
You become eligible at age 65 when you first qualify for Medicare. You can add or change your Part D plan during the Annual Election Period (October 15 – December 7).
If you delay enrollment without creditable drug coverage, you may face a late-enrollment penalty that permanently increases your premiums.
After your initial enrollment, Medicare provides specific windows each year to make changes to your coverage.
The main enrollment window each year. You can switch between Original Medicare and Medicare Advantage, change Advantage plans, or add, drop, or change your Part D prescription drug plan. Changes take effect January 1 of the following year.
If you're currently in a Medicare Advantage plan, you can switch to a different Advantage plan, return to Original Medicare, or add/drop Part D coverage during this window.
Certain life events — like moving to a new area, losing employer coverage, or qualifying for Medicaid — may trigger a two-month Special Enrollment Period that allows you to make changes outside the regular windows. In some cases, guaranteed issue rights for Medigap apply.
If you missed your Initial Enrollment Period, you can sign up for Part A and/or Part B during this window. Coverage starts the month after enrollment. Late-enrollment penalties may apply.
Missing enrollment windows can result in permanent premium penalties and gaps in coverage. If you're approaching any of these dates, reach out to us for free, no-obligation help — we'll make sure you don't miss anything important.
Use this checklist to make sure you're ready. Print it, save it, or bring it to your free consultation with us.
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