Medicare choices can feel like picking a lane on a freeway with ten exits in the next mile. The core decision for many beneficiaries is whether to stay with Original Medicare, Part A plus Part B, or enroll in a Medicare Advantage plan, also called Part C. Both paths can work well, but they manage costs, networks, and add-on coverage in different ways, so the best fit depends on how you use care and who you want access to.
Original Medicare Basics
Original Medicare includes:
- Part A, hospital insurance
- Part B, medical insurance
With Part B-covered services, beneficiaries often pay 20% coinsurance after meeting the Part B deductible, unless they have supplemental coverage. Original Medicare also does not include a built-in annual out-of-pocket maximum for most services. Many people address that gap by pairing Original Medicare with a Medigap policy and a Part D plan for prescriptions.
For 2026, CMS states the standard Part B premium is $202.90 per month, and the Part B deductible is $283.
Medicare Advantage Basics
Medicare Advantage plans are offered by private insurers approved by Medicare. They must cover Part A and Part B services, and many include Part D drug coverage plus extra benefits like dental, vision, hearing, or fitness programs. Unlike Original Medicare alone, Medicare Advantage plans have an annual out-of-pocket maximum, which can cap in-network spending for covered services. The specific limit varies by plan and by county.
Networks and Referrals
Provider access is often the practical difference.
- Original Medicare: Most providers nationwide can be used as long as they accept Medicare. This tends to appeal to people who travel often or want the broadest choice of doctors and hospitals.
- Medicare Advantage: Plans commonly use provider networks and may require referrals depending on plan type. That network structure is often the tradeoff for lower premiums or added benefits, so checking whether your doctors and preferred hospitals are in-network matters.
Prescription Drug Coverage
Prescription coverage varies by lane.
- Original Medicare: Drug coverage typically comes through a separate Part D plan. Costs depend on the plan’s formulary, the pharmacy network, and how your prescriptions are tiered.
- Medicare Advantage: Many plans bundle Part D, but formularies, pharmacy networks, and prior authorization rules vary by insurer and plan. For 2026, Medicare materials explain that out-of-pocket drug costs for covered Part D drugs are capped at $2,100, and beneficiaries may be able to spread costs through the Medicare Prescription Payment Plan.
What To Review Before You Choose
The smartest comparison is personal because it depends on your healthcare patterns and priorities.
Review these items before enrolling or switching:
- Premiums and Base Costs: The Part B premium applies either way, and plan premiums vary by option. Compare the full monthly cost, including any Medigap or Part D premium under Original Medicare. You should also weigh cost-sharing since a lower premium can come with higher copays or coinsurance.
- Deductibles, Copays, and Coinsurance: Original Medicare typically uses a coinsurance model for many services, while Medicare Advantage often uses set copays for visits and services. Look at your likely usage, such as specialist visits, imaging, physical therapy, and outpatient procedures, then estimate annual totals rather than focusing only on the monthly price.
- Networks and Out-Of-Network Rules: Medicare Advantage plans can be a strong fit when the network matches your doctors and local hospitals. Out-of-network coverage can be limited or expensive, depending on the plan type. Original Medicare generally gives broader provider flexibility, which can matter for frequent travelers or people who want access to specific specialists.
- Prior Authorization Requirements: Many Medicare Advantage plans require prior authorization for certain services, which can affect the timing of imaging, procedures, or higher-cost medications. This is not automatically a problem, but it is worth understanding how the plan handles approvals and appeals.
- Drug Formularies and Pharmacy Preferences: One plan can be great for your neighbor and a headache for your prescription list. Confirm each medication, dosage, and preferred pharmacy, then check for any step therapy rules or prior authorization requirements for your drugs.
A Simple Decision Framework
Original Medicare plus Medigap and Part D often appeals to people who prioritize provider flexibility, predictable access, and fewer network limitations. Medicare Advantage can be a strong fit for people who prefer bundled coverage, extra benefits, and an annual out-of-pocket cap, as long as the network fits their doctors and the plan rules feel workable. One of our Medicare-focused agents at Terpstra Insurance Agency can help compare plan options in your area and verify that your doctors and prescriptions align before you enroll. Give us a call at (219) 838-1198.
