What Is Medicare Advantage?
Medicare Advantage, also known as Medicare Part C, is an alternative to Original Medicare offered by private insurance companies approved by Medicare. These plans must cover everything Original Medicare covers, but they often include additional benefits such as dental, vision, hearing, and prescription drug coverage.
When you enroll in a Medicare Advantage plan, you still have Medicare, but you get your Part A (hospital) and Part B (medical) coverage through the private plan instead of directly from the federal government. You continue to pay your Part B premium, and depending on the plan, you may pay an additional plan premium.
As of 2024, more than 33 million Medicare beneficiaries, roughly half of all Medicare enrollees, are in a Medicare Advantage plan. Enrollment has grown steadily for over a decade.
How It Works
Medicare pays a fixed monthly amount to the private insurer to provide your coverage. The insurer then manages your benefits, sets your cost-sharing structure (copays, deductibles, coinsurance), and determines which providers are in-network.
You Enroll
Choose a Medicare Advantage plan available in your ZIP code during an enrollment period.
Medicare Pays the Insurer
The federal government pays a fixed monthly amount to the private insurer on your behalf.
You Use Your Plan
Use in-network providers, pay plan copays, and access all benefits including any extras like dental.
Medicare Advantage Plan Types
Not all Medicare Advantage plans work the same way. The four main types differ in how you access providers and how much flexibility you have.
Health Maintenance Organization
Must use in-network providers. Requires referrals for specialists. Lowest premiums.
Preferred Provider Organization
Use any doctor, in or out of network. No referrals needed. Higher premiums.
Special Needs Plan
Tailored for people with specific chronic conditions, dual eligibility, or institutional care.
Private Fee-for-Service
Set payment rates for any provider who accepts the plan's terms. No network required.
Pros and Cons
Advantages
- Often $0 monthly premium
- Includes dental, vision, and hearing
- Prescription drug coverage included
- Out-of-pocket maximum protection
- Extra benefits like gym memberships
Considerations
- Limited to plan's provider network (HMO)
- Need referrals for specialists (HMO)
- Coverage varies by plan and county
- Must live in plan's service area
- Plans can change benefits annually
Costs at a Glance
Cost structures differ significantly between Original Medicare and Medicare Advantage. The table below shows typical 2025 to 2026 figures.
| Cost Item | Original Medicare | Medicare Advantage |
|---|---|---|
| Monthly Premium | $0 to $174.70 (Part B) | Often $0 (varies by plan) |
| Annual Deductible | $1,632 (Part A) / $240 (Part B) | Varies, often lower |
| Copays / Coinsurance | 20% after deductible | Fixed copays (e.g., $10 to $50) |
| Out-of-Pocket Max | No limit | $8,850 max (2026) |
| Dental / Vision | Not covered | Often included |
Figures are approximate. Actual costs vary by plan, county, and income level.
Medicare Advantage vs. Original Medicare
The right choice depends on your health needs, preferred doctors, and budget. Here is a side-by-side comparison of the key differences.
| Feature | Original Medicare | Medicare Advantage |
|---|---|---|
| Provider Choice | Any Medicare-accepting provider | Network-based (HMO) or broader (PPO) |
| Referrals Needed | No | Yes for HMO, No for PPO |
| Drug Coverage | Requires separate Part D plan | Usually included |
| Extra Benefits | None | Dental, vision, hearing, gym |
| Out-of-Pocket Cap | None | Yes, capped annually |
How to Enroll
You can only enroll in or change Medicare Advantage plans during specific enrollment windows. Missing your window can mean waiting up to a year.
Initial Enrollment Period
7-month window around your 65th birthday
Your first opportunity to enroll in Medicare and choose a Medicare Advantage plan.
Annual Enrollment Period
October 15 to December 7 each year
Switch between Original Medicare and Medicare Advantage, or change your Medicare Advantage plan.
Medicare Advantage Open Enrollment
January 1 to March 31 each year
Switch Medicare Advantage plans or return to Original Medicare if you are already enrolled in Medicare Advantage.
Special Enrollment Period
Triggered by qualifying life events
Moving, losing employer coverage, or qualifying for Medicaid may allow you to change plans outside normal windows.
Common Questions
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