Original Medicare usually offers broader provider choice, while Medicare Advantage delivers Original Medicare coverage through a private plan that may add extra benefits but generally uses a provider network. The better fit depends on which matters more to you: flexibility in choosing care or a plan’s bundled coverage and rules.

Comparing Medicare Advantage with Original Coverage means looking beyond the monthly cost: check which doctors and hospitals are included, how you access care, and what services are covered. For more on how a major insurer’s plans and services fit together, see our broader overview, “UnitedHealthcare: How Coverage, Care Networks and Member Services Fit Together.”

• 2 parts Original Medicare’s core coverage: Part A and Part B
• 1 separate Part D plan Prescription coverage option identified for Original Medicare
• 0 routine physical exams Routine physical exams are not covered by Original Medicare
• 0 most dental care Most dental care is not covered by Original Medicare

What does Original Medicare cover?

Parts A and B

Original Medicare covers inpatient hospital care through Part A and doctor visits, outpatient services, and some preventive care through Part B. Together, Parts A and B cover most medically necessary services and supplies in hospitals, doctors’ offices, and other health care facilities.

Original Medicare does not cover every type of routine care: routine physical exams, eye exams, and most dental care are excluded. That distinction matters when comparing coverage, because Medicare Advantage plans must cover services Original Medicare covers and may also offer some vision, hearing, or dental benefits.

Prescription drugs

Original Medicare does not include prescription drug coverage through Parts A and B. People who want that coverage can enroll in a separate Part D plan.

How does Medicare Advantage differ in coverage?

Core coverage and extras

Medicare Advantage plans must cover every medically necessary service covered by Original Medicare, but some plans add benefits that Original Medicare generally does not provide. Those optional extras can include vision, hearing and dental services, or emergency and urgently needed care while traveling outside the United States.

• Medically necessary care: Medicare Advantage must cover the medically necessary services covered by Original Medicare, including care in hospitals, doctors’ offices and other health care facilities.
• Vision, hearing and dental: Some Medicare Advantage plans offer benefits in these areas. Original Medicare generally does not cover routine eye exams or most dental care.
• Care abroad: Original Medicare generally does not cover medical care outside the United States. Some Medicare Advantage plans may offer an extra benefit for emergency and urgently needed care during international travel.

Coverage for extras varies by plan, so a benefit offered by one Medicare Advantage plan should not be assumed to come with another. Check each plan’s covered services directly, especially for vision, hearing, dental care and medical emergencies abroad.

Which option offers broader provider access?

Original Medicare generally offers broader provider access: you can use any hospital, doctor or other health care provider in the U.S. that accepts Medicare. Most Medicare Advantage plans, by contrast, require members to use providers in the plan’s network, so access depends on the specific plan.

Original Medicare’s provider choice is based on whether a U.S. provider accepts Medicare. Medicare Advantage’s network rules can affect whether the doctors and hospitals you already use are available through your coverage. Check the plan’s network before enrolling, rather than assuming your current providers participate.

Questions to check before enrolling

• Doctors: Are the doctors you use included in the Medicare Advantage plan’s network?
• Hospitals: Are the hospitals you would turn to in that network?
• Coverage route: Do you prefer access to any U.S. provider accepting Medicare, or access shaped by a plan’s network rules?

What should you compare about costs and supplemental coverage?

Compare Original Medicare’s Part A and Part B costs with the premiums, cost-sharing rules, and coverage limits of the specific Medicare Advantage plan you are considering; the available material gives no figures for premiums, deductibles, copayments, or out-of-pocket limits.

Compare the full arrangement

• Original Medicare: Check your Part A and Part B costs, then consider whether you need a separate Part D plan for prescription drugs and supplemental coverage for services Original Medicare does not cover. Original Medicare covers most medically necessary services but excludes some care, including most dental care and routine eye exams.
• Medicare Advantage: Review the specific plan’s costs and coverage rules. It must cover medically necessary services covered by Original Medicare and may include extra benefits such as some dental, vision, or hearing services.
• Your likely use: Compare how each option covers your prescriptions and expected appointments, as well as any extra services you may use. For Original Medicare, check whether your doctors and other providers accept Medicare; Medicare Advantage plans may have different provider-access rules.

Plan documents are essential for a meaningful cost comparison: benefit details can vary between Medicare Advantage plans, and the available information does not specify prices or cost-sharing amounts. Check current documents for the particular plan rather than relying on a general figure, and account separately for any Part D or supplemental coverage you would choose with Original Medicare.

When might either option fall short?

Original Medicare may fall short for routine services and care outside the United States, while Medicare Advantage may restrict which providers you can use. The trade-off depends on the specific service and, for Medicare Advantage, the plan’s benefits and provider network.

Common assumptions to avoid.

• Routine care: Original Medicare does not cover routine physical exams, eye exams or most dental care. Medicare Advantage plans may offer some vision, hearing or dental services, but these extras are not guaranteed.
• Care abroad: Original Medicare generally does not cover medical care outside the U.S. Some Medicare Advantage plans may include an extra benefit for emergency or urgently needed care while travelling abroad; check the particular plan rather than assuming it does.
• Choice of provider: With Original Medicare, you can use any U.S. hospital, doctor or other provider that accepts Medicare. Most Medicare Advantage plans use provider networks, which can limit where you receive care compared with that Original Medicare choice.

Medicare Advantage must cover all medically necessary services covered by Original Medicare, but that requirement does not mean every plan includes the same optional benefits or provider access. Before choosing, check the plan’s stated vision, hearing, dental and travel benefits, and whether the providers you want are in its network.

How can you make an enrollment comparison?

Compare Original Medicare and Medicare Advantage by checking your providers, prescriptions and likely services against each option’s coverage. Original Medicare lets you use any U.S. hospital, doctor or other provider that accepts Medicare; most Medicare Advantage plans use a provider network.

A practical checklist

• Hospitals and clinicians: List the hospitals, doctors and other providers you want to keep. Confirm that each accepts Medicare if you’re considering Original Medicare, or is in the network of the specific Medicare Advantage plan you’re reviewing.
• Prescriptions: Write down your medications and check whether a separate Part D plan with Original Medicare or the Medicare Advantage plan’s own drug coverage suits your needs.
• Services you expect to use: Compare likely inpatient, outpatient and preventive care with each option’s stated coverage. Original Medicare covers most medically necessary services, but not routine physical exams, eye exams or most dental care; Medicare Advantage plans must cover Medicare-covered medically necessary services and may include dental, vision or hearing benefits.

For broader context on coverage, care networks and member services, read our related article, “UnitedHealthcare: How Coverage, Care Networks and Member Services Fit Together.”

Frequently asked questions

Key takeaways

• Original Medicare includes Part A and Part B; Part D prescription coverage is separate.
• Original Medicare allows care from any U.S. provider who accepts Medicare.
• Most Medicare Advantage plans use provider networks and must cover Original Medicare’s medically necessary services.
• Dental, vision, hearing and travel-related benefits may be available through some Medicare Advantage plans, but are not guaranteed.

Written byDerek Halloway

Derek focuses on canine health and care, providing practical, evidence-based advice for dog owners. His editorial style prioritizes clarity and trustworthy information, covering everything from nutrition to common health issues. He aims to empower owners to make informed decisions about their pets' wellbeing.