Choosing the right Medicare coverage can feel overwhelming, but understanding the basics can make a big difference in your healthcare experience—and your costs. Two of the most common options are Original Medicare and Medicare Advantage. While both provide coverage, they work in very different ways.
What Is Original Medicare?
Original Medicare is the traditional program offered by the Centers for Medicare & Medicaid Services.
It includes:
- Part A (Hospital Insurance) – Covers hospital stays, skilled nursing care, and some home health services
- Part B (Medical Insurance) – Covers doctor visits, outpatient services, and preventive care
What this means for you as a patient:
- You can see any doctor or specialist that accepts Medicare
- You do not need referrals
- You may need to purchase:
- A Part D plan for prescriptions
- A supplement (Medigap) plan to help with out-of-pocket costs
What Is Medicare Advantage?
Medicare Advantage (Part C) is offered by private insurance companies approved by Medicare, such as UnitedHealthcare, Humana, and Aetna.
These plans combine your coverage into one package and often include:
- Hospital and medical coverage (Parts A & B)
- Prescription drug coverage
- Extra benefits like dental, vision, hearing, and sometimes gym memberships
What this means for you as a patient:
- You will likely need to use a network of doctors
- You may need a referral to see a specialist
- Costs are often lower monthly, but you may pay copays for services
What Happens to Your Original Medicare If You Switch?
This is one of the most important things patients need to understand:
When you enroll in a Medicare Advantage plan, you are still in Medicare, but your coverage is handled differently.
- You are still enrolled in Medicare Parts A and B
- However, your benefits are now administered through the Medicare Advantage plan—not directly through Original Medicare
- Your Medicare Advantage plan becomes your primary (and only) coverage
- Your red, white, and blue Medicare card is not used for services—instead, you will use your insurance plan card
Important things to keep in mind:
- You cannot use both Original Medicare and Medicare Advantage at the same time
- If your provider is out of network, services may not be covered (depending on your plan)
- If you switch back to Original Medicare later, you may not always be able to get a Medigap plan without medical underwriting
Key Differences That Matter to Patients
With Original Medicare:
- More freedom to choose providers
- Better for patients who travel or have multiple specialists
- Higher upfront costs, but more predictable access
With Medicare Advantage:
- More structured care with networks
- Lower monthly costs
- Extra benefits—but more rules about how and where you receive care
Which Option Is Best for You?
There’s no one-size-fits-all answer. The best choice depends on your healthcare needs and preferences.
You may prefer Original Medicare if:
- You want maximum flexibility in choosing doctors
- You see specialists frequently
- You travel often
You may prefer Medicare Advantage if:
- You want lower monthly premiums
- You like having all coverage in one plan
- You’re comfortable using a network of providers
Final Thoughts for Patients
Before choosing a plan, it’s important to:
- Confirm your doctors are in-network (for Medicare Advantage plans)
- Review out-of-pocket costs, not just premiums
- Consider your current and future healthcare needs
Making the right choice now can help you avoid unexpected bills and ensure you receive the care you need without disruption.
Frequently Asked Questions
1. Can I switch between Medicare and Medicare Advantage?
Yes. You can make changes during certain enrollment periods, such as the Annual Enrollment Period (October 15 – December 7) or Medicare Advantage Open Enrollment (January 1 – March 31).
2. Do I still need to pay my Medicare premium if I have Medicare Advantage?
Yes. You must continue paying your Part B premium, even if you enroll in a Medicare Advantage plan.
3. Can I see my current doctor with a Medicare Advantage plan?
It depends. You’ll need to check if your doctor is in-network with your specific plan.
4. Do Medicare Advantage plans require referrals?
Many do, especially HMO plans. This means you may need approval from your primary care provider before seeing a specialist.
5. What happens if I travel?
- Original Medicare: Coverage works nationwide
- Medicare Advantage: Coverage may be limited outside your plan’s service area, except for emergencies
6. Can I have a Medigap plan with Medicare Advantage?
No. Medigap plans only work with Original Medicare, not Medicare Advantage.