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Whether you are turning 65, retiring, or helping a loved one understand Medicare, this guide explains what Medicare is, the four parts of Medicare, and when you may be able to enroll. Once you understand the basics, you will be better prepared to compare your coverage options and decide what fits your needs.
Medicare Fundamentals
Medicare is federal health insurance primarily for people age 65 and older. Some people can qualify before age 65 because of a disability, End-Stage Renal Disease, or ALS.
Medicare is divided into different parts that help cover different types of healthcare services. Understanding how those parts work is the first step toward comparing your available Medicare coverage options.
Federal health insurance
Primarily available beginning at age 65
Earlier eligibility may apply in certain situations
Coverage is organized into Parts A, B, C, and D
Learning the basic parts of Medicare first makes it easier to understand the difference between Original Medicare, Medicare Supplement coverage, Medicare Advantage, and prescription drug coverage.
Medicare Basics Video
Watch this brief introduction for a straightforward explanation of Medicare and the basic information you should understand before comparing Medicare plans or additional coverage options.
Continue to Parts A, B, C and DMedicare Parts A, B, C and D
Medicare is divided into four parts. Each part helps cover a different area of healthcare. Understanding the role of Parts A, B, C and D makes it easier to understand how Medicare coverage can be arranged.
Hospital Insurance
Part A helps cover inpatient hospital care, skilled nursing facility care after a qualifying hospital stay, hospice care, and certain home health services.
Important: Part A is hospital insurance, but it does not automatically pay every hospital-related cost.
Medical Insurance
Part B helps cover physician services, outpatient care, preventive services, diagnostic testing, durable medical equipment, and other medically necessary services.
Important: Part B generally has a monthly premium and may also include deductibles, coinsurance, or other costs.
Medicare Advantage
Part C is another way to receive Medicare benefits through a private Medicare-approved insurance company. These plans provide Part A and Part B coverage and often include Part D drug coverage.
Important: Medicare Advantage plans can differ by county, provider network, cost sharing, and included benefits.
Prescription Drug Coverage
Part D helps cover prescription medications. Coverage may be provided through a stand-alone prescription drug plan or included within many Medicare Advantage plans.
Important: Drug lists, pharmacy networks, copays, and coverage rules can vary from one plan to another.
How Medicare Coverage Fits Together
Parts A and B are commonly called Original Medicare. From there, people may choose additional coverage such as a Medicare Supplement and stand-alone Part D plan, or they may choose to receive Medicare benefits through a Medicare Advantage plan.
Parts A and B, often paired with a Medicare Supplement and stand-alone Part D prescription drug plan.
A private Medicare-approved plan that provides Part A and Part B benefits and often includes Part D coverage.
The next step is knowing when you can enroll in Medicare and which enrollment period may apply to your situation.
Knowing When to Enroll
Medicare has several enrollment periods, and the one that applies to you can depend on your age, current insurance, employment status, and personal circumstances. Understanding these timeframes can help you avoid unnecessary delays or gaps in coverage.
First Opportunity
Your Initial Enrollment Period is generally the seven-month window surrounding the month you turn 65. It begins three months before your birthday month and continues for three months afterward.
Important: Your enrollment timing may differ when you already receive Social Security benefits or have qualifying employer coverage.
Certain Life Changes
A Special Enrollment Period may allow you to enroll or make certain coverage changes outside the regular enrollment periods after a qualifying situation or life event.
Examples may include: losing qualifying employer coverage, moving, or experiencing another Medicare-recognized change.
Missed Earlier Enrollment
The General Enrollment Period may be available when someone did not enroll in Medicare Part A or Part B when first eligible and does not qualify for a Special Enrollment Period.
Important: Delaying enrollment without qualifying coverage can result in late-enrollment penalties in some situations.
October 15–December 7
The Medicare Annual Enrollment Period allows people with Medicare to review and make certain changes to Medicare Advantage and prescription drug coverage for the following year.
Good practice: Review your doctors, medications, pharmacies, costs, and plan changes before deciding whether to keep or change coverage.
January 1–March 31
This enrollment period is available to people already enrolled in a Medicare Advantage plan and allows certain Medicare Advantage coverage changes.
Important: This period is not the same as the Annual Enrollment Period and does not provide every Medicare beneficiary with the same options.
Personal Circumstances Matter
Retiring after age 65, continuing employer coverage, receiving disability benefits, moving, or qualifying for assistance programs can affect your Medicare enrollment options.
Do not assume: The same enrollment rules apply to every person simply because they are turning 65.
Interactive Medicare Tool
Use our Medicare Enrollment Tool to answer a few questions about your age, employment, and current health coverage. The tool can help point you toward the enrollment timing that may apply to your situation.
Turning 65: Your Next Steps
Once you understand the basics and your possible enrollment timeline, the next step is preparing for your Medicare decision. Watch this short video for a simple overview of what to do next.
Visit the New to Medicare GuideSchedule an appointment to review your enrollment timing, doctors, medications, budget, and Medicare coverage options with Capstone Health.
Whether you're preparing for Medicare, reviewing your current coverage, or looking for personalized guidance, choose the next step that's right for you.
Plans, prescriptions, doctors, and health needs change. Having the right independent Medicare agent helps ensure your coverage continues to fit your needs year after year.
Value of Annual ReviewsLearn more about the independent Medicare agents at Capstone Health and how we help clients before, during, and after enrollment.
Meet Our TeamHave questions about Medicare enrollment, your options, or the next step? Contact Capstone Health for clear, local guidance.
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