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Medicare Basics: Your Essential Guide to Getting Started

By New Jersey Medicare Advisory • May 16, 2026

Understanding Medicare: What You Need to Know Before You Enroll

Navigating Medicare for the first time can feel overwhelming, but it doesn't have to be. Whether you're approaching your 65th birthday or helping a loved one understand their options, getting the fundamentals right is essential. This guide will walk you through the core elements of Medicare so you can make informed decisions about your healthcare coverage.

Eligibility and When You Can Enroll

Most people become eligible for Medicare at age 65, though some qualify earlier due to disability or specific health conditions like End-Stage Renal Disease or ALS. Your Initial Enrollment Period is a seven-month window that begins three months before your 65th birthday month, includes your birthday month, and extends three months after.

Missing this window can be costly. If you don't enroll when first eligible and aren't covered by other qualifying insurance, you may face late enrollment penalties that last for as long as you have Medicare. The Annual Enrollment Period, running from October 15 to December 7 each year, allows you to make changes to your coverage. There's also a Special Enrollment Period for those who qualify due to specific life events, such as losing employer coverage.

Breaking Down Medicare Parts A, B, C, and D

Medicare Part A covers hospital stays, skilled nursing facility care, hospice, and some home health services. Most people don't pay a premium for Part A if they or their spouse paid Medicare taxes while working.

Medicare Part B covers doctor visits, outpatient care, preventive services, and medical equipment. Part B requires a monthly premium, and most beneficiaries also pay an annual deductible before coverage begins.

Medicare Part C, also called Medicare Advantage, is an alternative way to receive your Medicare benefits through private insurance companies approved by Medicare. These plans include Part A and Part B coverage, and most include Part D prescription drug coverage. Many offer additional benefits like dental, vision, or hearing coverage.

Medicare Part D provides prescription drug coverage through private insurance companies. If you have Original Medicare (Parts A and B) and want prescription coverage, you'll need to enroll in a standalone Part D plan. Like Part B, delaying Part D enrollment when first eligible can result in lifetime penalties.

Understanding Your Costs

Medicare involves several types of costs beyond monthly premiums. With Original Medicare, you'll encounter deductibles, coinsurance, and copayments. Part A has a deductible for each benefit period, while Part B has an annual deductible plus you typically pay 20% coinsurance for most services.

Because Original Medicare doesn't have an out-of-pocket maximum, many beneficiaries purchase a Medigap (Medicare Supplement) policy to help cover these costs. Medigap policies are standardized and sold by private insurance companies.

Medicare Advantage plans work differently, with varying copays and coinsurance amounts depending on the services you receive. These plans do include an annual out-of-pocket maximum, which can provide financial protection.

Your actual costs depend on many factors, including your income, the specific plans you choose, and the services you use. Higher-income beneficiaries may pay additional amounts for Part B and Part D coverage.

Common Misconceptions About Medicare

Many new enrollees believe Medicare covers everything, but this isn't true. Original Medicare doesn't cover dental care, eye exams for glasses, or hearing aids. It also doesn't cover long-term custodial care in nursing homes.

Another common myth is that you're automatically enrolled in all parts of Medicare. While most people are automatically enrolled in Parts A and B if they're already receiving Social Security, you must actively enroll in Part D and choose between Original Medicare with a supplement or a Medicare Advantage plan.

Some people think they can't change their coverage after their initial enrollment, but the Annual Enrollment Period exists specifically for this purpose. You can switch from Original Medicare to Medicare Advantage, change Medicare Advantage plans, or modify your Part D coverage each year.

Getting Personalized Help

Every person's healthcare needs and financial situation are unique. While this guide covers the fundamentals, working with a licensed Medicare advisor can help you understand which options best fit your specific circumstances. The team at New Jersey Medicare Advisory is here to help you navigate your Medicare journey with confidence.

For personalized guidance on your Medicare options, call us at 856-221-7051. Our experienced advisors can answer your questions and help you find coverage that meets your needs and budget.