Medicare provides health coverage to people 65 and older and to certain individuals with disabilities. Understanding how its parts fit together helps you choose a path that suits your budget, doctors, and medications. At a high level, you can stay with Original Medicare (Parts A and B), add a standalone Prescription Drug Plan (Part D), and consider a Medicare Supplement (Medigap), or you can enroll in a Medicare Advantage plan (Part C) that bundles benefits through a private insurer.

This article is for informational purposes only and should not be considered medical advice. Please consult a qualified healthcare professional for personalized guidance and treatment.

What are Medicare plans?

Medicare plans include several components. Original Medicare consists of Part A (hospital) and Part B (medical). It allows you to see any provider that accepts Medicare, but it does not include most outpatient prescriptions and does not cap annual out-of-pocket costs. Many beneficiaries pair it with a Medicare PDP (Part D prescription drug plan) and may add a Medigap policy to help pay deductibles and coinsurance. Alternatively, Medicare Advantage plans (Part C) are offered by private insurers and combine Part A and Part B, often including drug coverage and additional benefits. Each path works differently, so it’s important to review network rules, covered services, and total costs.

How Medicare Advantage works

Medicare Advantage (MA) plans are administered by private insurers under contract with Medicare. You remain in the Medicare program, but the plan manages your benefits and may set rules such as provider networks, referrals, and prior authorization. Common plan types include HMOs and PPOs. Many MA plans include Part D coverage, plus extras that Original Medicare does not cover, like routine dental, vision, hearing, transportation, and fitness programs. Plans must set an annual out-of-pocket maximum for Part A and Part B services, which can help limit your risk. Availability and covered benefits vary by county, so reviewing plan documents in your area is essential.

Who qualifies: Medicare plan eligibility

Medicare Plan Eligibility generally begins at age 65 for U.S. citizens and certain lawful residents. People under 65 may qualify after 24 months of disability benefits, and those with end-stage renal disease (ESRD) or ALS can qualify earlier. To join a Medicare Advantage plan, you must have both Part A and Part B and live in the plan’s service area. For a Medicare PDP, you need Part A or Part B and residence in the plan’s service area. Medigap generally requires enrollment in Parts A and B. Because rules can be nuanced—especially for those continuing employer coverage—verifying your specific situation helps avoid late penalties or gaps in coverage.

Medicare enrollment windows

Medicare Enrollment starts with the Initial Enrollment Period (a seven-month window beginning three months before the month you turn 65). If you delay Part B due to qualifying employer coverage, you may get a Special Enrollment Period later. Each fall, the Annual Enrollment Period (typically mid-October to early December) allows changes between Original Medicare and Medicare Advantage, switching or adding a Medicare PDP, or changing plans. The Medicare Advantage Open Enrollment Period (generally January through March) permits a one-time switch between MA plans or a return to Original Medicare with or without drug coverage. If you miss initial deadlines, the General Enrollment Period (also early in the year) may apply for Part B, potentially with penalties.

Health coverage options and Medicare PDP

Your Health Coverage Options often come down to two approaches. With Original Medicare, you can see any Medicare-participating provider nationwide, add a Medicare PDP for prescriptions, and optionally choose a Medigap policy to help with cost-sharing. With Medicare Advantage, you enroll in a single plan—often including drugs and supplemental benefits—then follow its provider network and coverage rules. For prescriptions, Medicare PDP plans (standalone Part D or included in MA) have formularies, tiers, and network pharmacies. Review whether your medications are covered, check any prior authorization or step therapy requirements, and compare mail-order options and monthly premiums. Plans from national carriers—such as those offering Wellcare Medicare and Wellcare Health Insurance products—operate in many counties, though specific availability and covered benefits vary by ZIP code.

Examples of Medicare Advantage and Medicare PDP providers available in many regions are listed below. Offerings differ by state and county; always confirm details for your location.

Comparing features to your needs

When reviewing Medicare Plans, match benefits to what you actually use. If you travel frequently or split time across states, Original Medicare plus a Medicare PDP and a Medigap policy may offer flexibility. If you prefer bundled coverage with an annual out-of-pocket cap and local services, a Medicare Advantage plan can be appealing—provided your doctors and hospitals are in network and your medications are on the plan’s formulary. Star Ratings, provider directories, Summary of Benefits documents, and drug look-up tools help you verify fit. Reassess each year during enrollment periods, as formularies, networks, and plan designs can change.

Where Wellcare fits

Wellcare Medicare options, part of Centene’s offerings, include a range of Medicare Advantage and Medicare PDP plans across many U.S. counties. As with any carrier, plan availability, premiums, provider networks, prior authorization rules, and supplemental benefits differ by location. If considering Wellcare Health Insurance products, review local plan documents, check participating doctors and pharmacies in your area, and confirm that your prescriptions are covered under the plan’s formulary.

In summary, understanding how Parts A, B, C, and D interact—and how eligibility and enrollment windows work—helps you narrow Health Coverage Options that fit your care preferences. Decide whether nationwide provider access or coordinated benefits matter more to you, confirm that your medications are covered, and revisit your selection each year to keep alignment with your health and budget.