If you are helping a parent choose health coverage, Medicare decisions matter. Medicare can feel complicated. This guide breaks the main differences into plain language. It will help you compare Original Medicare and Medicare Advantage.
What is Original Medicare?
Original Medicare is the federal program made up of Part A and Part B.
- Part A covers hospital care, skilled nursing facility care, hospice, and some home health services.
- Part B covers doctor visits, outpatient care, medical supplies, and many preventive services.
With Original Medicare you can see any doctor or hospital anywhere in the U.S. that accepts Medicare. For many services, after the Part B deductible is met you usually pay about 20% of the Medicare-approved amount (coinsurance). Original Medicare does not have a yearly out-of-pocket cap. That means costs can add up unless you have other coverage, like a Medigap policy, Medicaid, or employer benefits.
If you want drug coverage with Original Medicare, you must buy a separate Part D prescription drug plan.
What is Medicare Advantage (Part C)?
Medicare Advantage plans are sold by private insurance companies. They must cover everything Original Medicare covers. Many plans also include extra benefits.
Most Medicare Advantage plans:
- Combine Part A and Part B into one plan.
- Often include Part D drug coverage, so you may not need a separate drug plan.
- May offer added benefits like dental, vision, hearing, or fitness programs.
- Have a yearly limit on out-of-pocket costs for covered services. Once you reach that limit, the plan pays your covered Medicare services for the rest of the year.
Medicare Advantage plans vary by location and by company. Some plans have low or even $0 monthly premiums beyond the Part B premium. But you still must pay your Part B premium.
Doctor and hospital choice
Original Medicare:
- Lets you use any provider who accepts Medicare.
- Does not require referrals to see specialists.
- Gives maximum freedom if your parent prefers to keep current doctors.
Medicare Advantage:
- Usually works with a network of doctors and hospitals.
- You may pay more if you see an out-of-network provider.
- Some plans require a primary care doctor and referrals to see specialists.
- Emergency and urgent care are covered across the country, but routine care may be limited to the plan’s service area.
If your parent already has favorite doctors or needs care from specialists, check whether those providers are in the plan’s network.
Costs and financial protection
Original Medicare:
- You pay the Part B premium and any deductibles, coinsurance, and copays.
- There is no built-in annual out-of-pocket limit for Parts A and B.
- Many people buy a Medigap (Medicare Supplement) policy to help pay copays, coinsurance, and deductibles. Medigap does not work with Medicare Advantage.
Medicare Advantage:
- You still pay the Part B premium. You may also pay an additional plan premium, though some plans have none.
- Plans set their own copays, coinsurance, and deductibles.
- Importantly, Medicare Advantage plans have an annual out-of-pocket limit for covered services. This cap can provide financial protection some families find helpful.
When comparing total cost, look beyond premiums. Add expected copays, deductibles, and the plan’s out-of-pocket limit. Think about the health services your parent is likely to use in a year.
Prescription drugs and Medigap
- If you stay in Original Medicare, you can buy a separate Medicare Part D drug plan. Part D plans have their own costs and formularies.
- Most Medicare Advantage plans include Part D drug coverage. If it does, you usually do not need a separate Part D plan.
- Medigap policies are designed to work with Original Medicare. You generally cannot buy a Medigap policy if you are enrolled in Medicare Advantage, unless you switch back to Original Medicare.
Check the plan’s drug formulary and pharmacy network. Make sure your parent’s important medications are covered and affordable.
Rules, prior authorization, and appeals
Medicare Advantage plans often require prior authorization for some services. That means the plan must approve certain procedures before paying. Some plans also require referrals to see specialists.
Original Medicare generally does not require prior authorization for most services. You usually do not need a referral to see a specialist.
If you need to appeal a coverage decision, the process can differ depending on whether the care comes through Original Medicare or a Medicare Advantage plan. If your parent values fewer restrictions and simpler appeals, Original Medicare may feel easier to navigate.
Travel and coverage outside the U.S.
Original Medicare generally does not cover most care outside the United States. Some Medigap policies offer limited emergency foreign travel coverage.
Medicare Advantage plans typically do not cover routine care outside the U.S. Some plans may offer emergency or travel-related benefits for care abroad. If your parent travels a lot, look carefully at how each option handles care when away from home.
Enrollment and switching
You are usually enrolled in Original Medicare when you first sign up for Medicare Parts A and B. To join a Medicare Advantage plan you must enroll during your enrollment period.
You can switch between Original Medicare and Medicare Advantage, but there are specific times when you can do that. The Medicare Annual Enrollment Period each fall is one of the main windows to change plans. There are also Special Enrollment Periods for certain life events. Check the official Medicare website or talk with a counselor about deadlines and rules.
How to choose — practical tips for caregivers
- List current doctors, hospitals, and medications. Check if they are in a plan’s network and formulary.
- Estimate yearly costs, not just monthly premiums. Include expected copays, deductibles, and the out-of-pocket limit.
- Think about travel and whether your parent needs care outside the plan area.
- If your parent needs many services or predictable care, an annual out-of-pocket limit (in Medicare Advantage) may be important.
- If your parent wants the freedom to see any Medicare provider, Original Medicare may be a better fit. Remember, Medigap can help cover gaps if you choose Original Medicare.
- Get help from a trusted source. Use Medicare.gov, local State Health Insurance Assistance Programs (SHIP), or a licensed agent to compare plans in your area.
Choosing Medicare coverage matters for both care and cost. Take the time to compare plan details and ask questions. Doing this now can reduce surprises later and make it easier to arrange the care your parent needs at home.
