5 Things Every New Medicare Beneficiary Should Know

June 19, 2026•
Suzy Isenberg
Suzy Isenberg

5 Things Every New Medicare Beneficiary Should Know

Turning 65 and enrolling in Medicare for the first time? You're not alone. Medicare can feel overwhelming, but understanding a few key basics will help you make confident decisions about your coverage. Here are five essential things every new Medicare beneficiary should know.

1. You Have a Limited Enrollment Window

When you turn 65, the clock starts ticking on your Initial Enrollment Period, or IEP. This is a seven-month window that includes the three months before your birthday month, your birthday month itself, and the three months after. Missing this window can be costly—if you don't sign up for Medicare Part B (medical insurance) when you're first eligible and don't have creditable coverage from another source, you may face a late enrollment penalty that sticks with you for as long as you have Medicare. The same goes for Part D prescription drug coverage. The good news? If you're still working and covered under a group health plan with 20 or more employees, you may be able to delay enrollment without penalty. But it's worth confirming the rules with a licensed agent to avoid surprises down the road.

2. Original Medicare vs. Medicare Advantage—Know the Difference

One of the first decisions you'll make is whether to go with Original Medicare or a Medicare Advantage plan. Original Medicare consists of Part A (hospital insurance) and Part B (medical insurance), and it's accepted by most doctors and hospitals nationwide. You have the freedom to see any provider that accepts Medicare, with no network restrictions. Medicare Advantage, also called Part C, is an alternative way to get your Medicare benefits through a private insurance company. These plans often include extra benefits like dental, vision, and prescription drug coverage, and many have $0 monthly premiums. However, they typically use provider networks, so you'll need to check that your doctors are in-network. Which option is right for you? It depends on your health needs, budget, and whether you prefer flexibility or bundled benefits.

3. Part D Covers Prescription Drugs (And You Probably Need It)

Medicare Part D is prescription drug coverage, and it's optional—but skipping it can be a costly mistake. Even if you don't take many medications now, signing up during your Initial Enrollment Period protects you from late enrollment penalties if you need drug coverage later. If you go without Part D for 63 days or more after you're first eligible, you'll pay a penalty for as long as you have Medicare. Some Medicare Advantage plans include prescription drug coverage built in, so if you choose one of those, you're already covered. If you stick with Original Medicare, you'll need to add a standalone Part D plan. Either way, it's worth reviewing the formulary (the list of covered drugs) to make sure your medications are included.

4. Medigap (Supplement) Plans Help Cover Gaps

If you choose Original Medicare, you'll quickly notice it doesn't cover everything. You'll still be responsible for deductibles, copays, and coinsurance. That's where Medigap comes in. Medigap, or Medicare Supplement Insurance, is sold by private companies and helps fill in those gaps. These plans can cover things like the Part B deductible, Part A coinsurance, and even emergency care when you travel abroad. There's a catch, though: Medigap only works with Original Medicare, not Medicare Advantage. The best time to buy a Medigap policy is during your Medigap Open Enrollment Period, which starts the month you turn 65 and are enrolled in Part B. During this six-month window, insurance companies can't deny you coverage or charge you more because of health issues. After that window closes, you may face medical underwriting, which could make it harder or more expensive to get coverage.

5. You Can Change Plans During Annual Enrollment

Here's some reassuring news: you're not locked in forever. Every year from October 15 to December 7, there's a period called the Annual Enrollment Period, or AEP. During this time, you can switch from Original Medicare to a Medicare Advantage plan (or vice versa), change Medicare Advantage plans, or add or drop prescription drug coverage. If you pick a plan and it's not working for you—maybe your doctor left the network, or your prescriptions aren't covered the way you expected—you can make a change during the next AEP. This flexibility gives you the chance to reassess your needs and find a plan that fits better. Many people find it helpful to work with a licensed Medicare agent during this time. An agent can walk you through your options, compare plans side by side, and help you find coverage that matches your health needs and budget—all at no cost to you.

Conclusion

Medicare doesn't have to be complicated. Understanding these five basics puts you ahead of most new beneficiaries. If you have questions about which plan is right for you, consider working with a licensed Medicare agent who can walk you through your options at no cost to you.


FIDAM Advisors is an independent insurance agency licensed to sell Medicare plans. We do not offer every plan available in your area. Please contact Medicare.gov or 1-800-MEDICARE for information on all of your options.