Medicare Decision Guide
Medicare Advantage vs. Original Medicare: What’s the Difference?
Choosing how to receive Medicare coverage is one of the most important decisions a person makes when enrolling in Medicare.
Both provide Medicare Part A and Part B benefits, but they can differ considerably in provider access, costs, prescription coverage, additional benefits, and plan rules. Neither choice is automatically better for everyone. The right choice depends on your doctors, medications, health needs, travel habits, budget, and preferences.
What Is Original Medicare?
Original Medicare is administered by the federal government and includes:
- Part A, which primarily covers inpatient hospital care, limited skilled nursing facility care, hospice care, and certain home health services.
- Part B, which covers many physician services, outpatient care, preventive services, medical equipment, and other medically necessary services.
You can generally visit any doctor or hospital in the United States that accepts Medicare. Original Medicare does not normally include routine prescription-drug coverage, so many people enroll in a separate Part D plan.
Original Medicare does not have an annual out-of-pocket limit for covered Part A and Part B services. Some people purchase Medicare Supplement Insurance, commonly called Medigap, to help cover certain deductibles, copayments, and coinsurance.
What Is Medicare Advantage?
Medicare Advantage is also called Medicare Part C or an MA plan. Medicare-approved private companies provide your Part A and Part B benefits instead of having those benefits administered directly through Original Medicare.
Most Medicare Advantage plans include Part D prescription-drug coverage. Some offer additional benefits that Original Medicare generally does not cover, such as certain routine dental, vision, hearing, fitness, transportation, or over-the-counter benefits.
Additional benefits vary by plan and may have restrictions, dollar limits, provider requirements, or other conditions. You must continue paying your Medicare Part B premium and may also pay a separate plan premium.
Medicare Advantage and Original Medicare at a Glance
| Consideration | Original Medicare | Medicare Advantage |
|---|---|---|
| Administration | Federal government | Medicare-approved private company |
| Doctors and hospitals | Any participating U.S. provider that accepts Medicare | You may need to use the plan’s network |
| Prescription coverage | Usually requires a separate Part D plan | Included in most plans |
| Referrals and approval | Usually fewer requirements | May require referrals or prior authorization |
| Medical out-of-pocket limit | No annual limit under Original Medicare alone | Annual limit for covered Part A and Part B services |
| Medigap | May be purchased if eligible | Cannot be used to pay Medicare Advantage costs |
| Additional benefits | Generally no routine dental, vision, or hearing benefits | Some plans offer additional benefits |
| U.S. travel | Broad access to participating Medicare providers | Nonemergency care outside the service area may be limited |
The Importance of Provider Networks
Original Medicare
Broad provider access can help people who travel frequently, live in more than one state, see specialists in different areas, or prefer more flexibility. Always confirm that a provider accepts Medicare.
Medicare Advantage
Many plans use provider networks. An HMO may generally require network providers except for emergencies, urgent care, and certain other situations. A PPO may allow out-of-network care, but you will often pay more.
Check your primary physician, specialists, hospitals, rehabilitation facilities, laboratories, imaging centers, pharmacies, and equipment suppliers. Confirm participation with both the plan and the provider’s office.
Prescription-Drug Coverage
With Original Medicare, you can enroll in a separate Part D plan. Most Medicare Advantage plans include Part D. In many Medicare Advantage HMOs and PPOs, adding a separate Part D plan can cause disenrollment from Medicare Advantage and a return to Original Medicare.
Each drug plan has its own list of covered medications, called a formulary. Plans may also use preferred pharmacies, prior authorization, step therapy, or quantity limits.
- List each prescription’s exact name, dosage, and frequency.
- Check whether each drug is covered and its cost tier.
- Confirm whether your preferred pharmacy participates.
- Check for prior-authorization or step-therapy requirements.
Understanding the Costs
Do not compare choices based only on the advertised monthly premium.
Original Medicare Costs
You may pay the Part B premium, Part A and Part B deductibles, copayments or coinsurance, a separate Part D premium and drug costs, a Medigap premium if purchased, and costs for noncovered services. Original Medicare alone has no annual out-of-pocket limit for Part A and Part B services.
Medicare Advantage Costs
You may pay the Part B premium, a separate plan premium, deductibles, copayments, coinsurance, prescription costs, higher permitted out-of-network costs, and expenses for services not fully covered.
Medicare Advantage plans have an annual out-of-pocket limit for covered Part A and Part B services. The amount varies by plan. Prescription expenses follow separate Part D rules and generally do not count toward that medical limit.
What Is Medigap?
Medigap is supplemental insurance sold by private companies to help pay some out-of-pocket expenses associated with Original Medicare. To purchase a policy, you generally must have Original Medicare Part A and Part B.
Medigap is not Medicare Advantage and cannot be used to pay Medicare Advantage deductibles, copayments, or coinsurance. Your ability to purchase a policy—and the price—can depend on when you apply and whether enrollment protections apply. Do not drop existing coverage until you understand whether you can obtain the replacement coverage you want.
Prior Authorization and Referrals
Original Medicare usually does not require prior authorization for covered services and supplies, although exceptions exist. Medicare Advantage plans may require approval for certain procedures, equipment, rehabilitation services, medications, or other care. Some plans may require a primary-care referral before you see a specialist.
Ask which services need prior authorization, whether referrals are required, what happens if authorization is denied, how appeals work, and who handles the request.
Additional Benefits
Some Medicare Advantage plans offer routine dental care, eye examinations or eyewear allowances, hearing services, fitness programs, transportation, over-the-counter allowances, or meal benefits in certain circumstances.
Examine the details carefully. A benefit may have a limited network, annual allowance, copayments, or restrictions. It is valuable only when it covers a service you need and can use conveniently.
Which Option Might Fit Your Needs?
Original Medicare may appeal to someone who:
- Wants broad access to Medicare-participating providers
- Travels frequently or lives in more than one location
- Does not want to depend on a local provider network
- Is willing to purchase separate drug and supplemental coverage
- Prefers fewer plan rules for specialist care
Medicare Advantage may appeal to someone who:
- Is comfortable using a local provider network
- Wants medical and prescription coverage combined
- Values certain additional benefits
- Prefers an annual limit on covered Part A and Part B out-of-pocket costs
- Is willing to follow referral and authorization requirements
These are general considerations, not recommendations. The specific plan’s details matter more than its advertising or category alone.
Questions to Ask Before Enrolling
- Are all my doctors and hospitals included?
- Are my prescriptions covered, and what will they cost?
- Does the plan require referrals or prior authorization?
- What are the premiums, deductibles, copayments, and coinsurance?
- What is the annual out-of-pocket limit?
- What happens if I need care outside Central Florida?
- Are my preferred pharmacies in the network?
- What additional benefits are offered, and what are their limitations?
- Will my retiree, Medicaid, veterans’, or employer coverage be affected?
- If I leave this coverage, can I obtain the Medigap policy I want?
Review Your Coverage Every Year
Medicare Advantage and Part D plans can change premiums, networks, drug lists, costs, and additional benefits. Review the Annual Notice of Change and Evidence of Coverage. Confirm your doctors, hospitals, medications, pharmacies, and expected costs each year.
Where Florida Residents Can Get Unbiased Help
Florida’s SHINE program—Serving Health Insurance Needs of Elders—provides free, unbiased, and confidential Medicare and health-insurance counseling. SHINE does not sell or endorse a particular insurance company or plan.
Visit FloridaSHINE.org or call the Elder Helpline at 1-800-963-5337. You can also compare plans using Medicare Plan Compare or call 1-800-MEDICARE.
Make the Decision Based on Your Own Needs
Compare your doctors, prescriptions, expected medical needs, total yearly costs, travel needs, authorization requirements, additional benefits, and Medigap eligibility. Take your time, use official information, and ask for unbiased assistance when needed.
This article provides general educational information and is not medical, legal, financial, or insurance advice. Medicare rules, costs, provider networks, formularies, and benefits can change. Verify current information with Medicare, the individual plan, your healthcare providers, or a qualified unbiased counselor before enrolling, changing, or ending coverage.