Medicare 101: A Beginner’s Guide to Understanding Your Coverage
August 14, 2026
If you’re approaching age 65—or helping a loved one navigate Medicare—you’ve probably realized there are a lot of options to consider. Between different plan types and enrollment periods, it’s easy to feel overwhelmed.
The good news? You don’t have to understand every detail all at once. Learning a few Medicare basics can help you feel more confident when it’s time to enroll or review your coverage.
Medicare at a Glance
Medicare is a federal health insurance program primarily for adults age 65 and older, as well as certain younger individuals with qualifying disabilities or medical conditions. While many people think of Medicare as a single plan, it actually consists of several parts that work together to provide different types of coverage.
- Part A: Hospital Coverage – Part A helps cover inpatient hospital stays, skilled nursing facility care, hospice care, and some home healthcare services.
- Part B: Medical Coverage – Part B covers outpatient medical services such as doctor visits, preventive care, lab work, and durable medical equipment.
- Part C: Medicare Advantage – Medicare Advantage plans are offered by private insurance companies approved by Medicare. These plans include the coverage provided by Parts A and B and often offer additional benefits, such as prescription drug coverage, dental, vision, hearing, and wellness programs.
- Part D: Prescription Drug Coverage – Part D helps cover the cost of prescription medications. Plans vary in the medications they cover, participating pharmacies, and overall costs.
- Medicare Supplement (Medigap) – Medigap plans work alongside Original Medicare to help pay for certain out-of-pocket expenses, such as deductibles, copayments, and coinsurance.
When Can You Enroll?
Understanding when you can enroll—or make changes to your coverage—is just as important as knowing the different parts of Medicare.
- Initial Enrollment Period – Most people become eligible around their 65th birthday. Your Initial Enrollment Period begins three months before your birthday month and ends three months after, giving you a seven-month window to enroll.
- Annual Enrollment Period – Each fall, Medicare beneficiaries have the opportunity to review and make changes to their Medicare coverage. Since plan costs, benefits, prescription drug coverage, and provider networks can change from year to year, it’s a good idea to review your options annually.
- Special Enrollment Periods – Certain life events—such as moving or losing employer-sponsored health insurance—may qualify you to enroll or make changes outside of the standard enrollment periods.
Quick Tip: Even if you’re happy with your current Medicare plan, it’s a good idea to review your coverage each year. Health needs, prescriptions, provider networks, and plan benefits can all change over time, and an annual review can help ensure your coverage continues to meet your needs.
Looking for additional information? Licensed Medicare experts at My Senior Health Plan offer free educational resources on topics like Original Medicare, Medicare Advantage, prescription drug coverage, enrollment periods, and more. It’s a great place to continue learning as you explore your options.
Learn More with Grace Presents
Understanding Medicare is an important step toward making informed healthcare decisions—but you don’t have to navigate it alone.
Watch our recent Grace Presents webinar, Understanding Medicare: Your Guide to Making Informed Decisions, where Medicare professionals from My Senior Health Plan explain coverage options, enrollment periods, common misconceptions, and what to consider when reviewing your plan.
Whether you’re approaching Medicare for the first time or simply want to better understand your current coverage, this complimentary educational session is designed to help you navigate your options with greater confidence.