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Medicare Basics: What New Enrollees Need to Know

By New Jersey Medicare Advisory • May 9, 2026

Medicare Basics: What New Enrollees Need to Know

Navigating Medicare for the first time can feel overwhelming, but understanding the basics will help you make informed decisions about your healthcare coverage. Whether you're approaching your 65th birthday or helping a loved one enroll, this guide covers the essential facts every New Jersey resident should know about Medicare.

Eligibility and Enrollment Periods

Most people become eligible for Medicare at age 65, though some qualify earlier due to disability or specific medical conditions. Your Initial Enrollment Period begins three months before your 65th birthday month and extends three months after—a seven-month window total.

Missing this window can result in late enrollment penalties that last a lifetime, so mark your calendar carefully. If you're still working and covered by an employer plan with 20 or more employees, you may qualify for a Special Enrollment Period when that coverage ends. The General Enrollment Period runs from January 1 to March 31 each year for those who missed their initial window, though penalties may apply.

Falling birthdays and employment transitions create unique situations, which is why consulting with a licensed Medicare advisor can help you avoid costly mistakes.

Understanding Medicare Parts A, B, C, and D

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

Part B (Medical Insurance) covers doctor visits, outpatient care, preventive services, and medical equipment. Part B requires a monthly premium, and higher earners may pay more based on income.

Part C (Medicare Advantage) is an alternative way to receive Medicare benefits through private insurance companies. These plans include Part A and B coverage, and most include prescription drug coverage. Many Medicare Advantage plans offer additional benefits like dental, vision, and hearing coverage.

Part D (Prescription Drug Coverage) helps cover the cost of medications. You can add Part D to Original Medicare (Parts A and B) or choose a Medicare Advantage plan that includes drug coverage. Like Part B, late enrollment in Part D can result in permanent penalties.

New Jersey residents have numerous plan options, and choosing the right combination depends on your health needs, preferred doctors, and budget.

Typical Costs and What to Expect

Medicare isn't free, even if you don't pay a Part A premium. Part B requires a monthly premium, and most people also pay for either a Part D plan or a Medicare Advantage plan. If you choose Original Medicare, many beneficiaries purchase a Medigap (Medicare Supplement) policy to help cover out-of-pocket costs like deductibles and coinsurance.

Costs vary significantly based on the plans you choose and your income level. Medicare Advantage plans may have lower monthly premiums but different out-of-pocket costs when you use services. Original Medicare with a Medigap plan typically has higher monthly premiums but more predictable costs when you need care.

Remember that premiums, deductibles, and coverage details change annually, so reviewing your coverage each fall during the Annual Enrollment Period (October 15 - December 7) is essential.

Common Misconceptions About Medicare

Many new enrollees believe Medicare covers everything, but it doesn't include routine dental, vision, or hearing care under Original Medicare. Long-term nursing home care also isn't covered—Medicare only covers limited skilled nursing facility stays following a hospital admission.

Another common misconception is that you're automatically enrolled. While some people are auto-enrolled in Parts A and B, others must actively sign up, especially if they're not yet receiving Social Security benefits.

Some people think they can't change plans after their initial enrollment, but the Annual Enrollment Period allows you to switch between Original Medicare and Medicare Advantage or change prescription drug plans each year.

Finally, many assume all doctors accept Medicare. While most do, it's important to verify that your preferred healthcare providers accept Medicare assignment or participate in your Medicare Advantage network.

Take the Next Step with Confidence

Understanding Medicare basics is your first step toward securing the right healthcare coverage. Every person's situation is unique, and the choices you make now will affect your coverage and costs for years to come.

Don't navigate these important decisions alone. The licensed Medicare advisors at New Jersey Medicare Advisory are here to help you understand your options at no cost to you. Call us today at 856-221-7051 to schedule a personalized consultation and ensure you're making the best choices for your healthcare needs.