Enrollment
How to Switch from Original Medicare to Medicare Advantage
Want to switch to Medicare Advantage? Here's the exact process — when you can do it, how to compare plans, and what to check before you make the move.
Quick Summary
Switching to Medicare Advantage (Part C) can lower your monthly premiums and add benefits like dental and vision. The switch is easy, but you must do it during an enrollment window (like Oct 15 - Dec 7).
Compare top Medicare Advantage plans in your area →/medicare
If you currently have Original Medicare but want more 'all-in-one' coverage, you may want to switch original medicare to medicare advantage. This transition allows you to get your hospital (Part A), medical (Part B), and drug coverage (Part D) from a single private insurance company. Here is exactly how the process works for 2026.
The 5-Step Switch Process
Verify Your Timing
You can switch during the Annual Enrollment Period (Oct 15 - Dec 7) or during your Initial Enrollment Period at age 65.
Compare Plan Networks
Medicare Advantage plans use networks. Check if your current doctors and hospitals are 'in-network' for the new plan.
Check the Drug List
Ensure your specific prescriptions are on the plan's 'formulary' at a reasonable price tier.
Evaluate Extra Benefits
Compare OTC card amounts, dental coverage limits, and fitness perks between different MA plans.
Enroll in the New Plan
Once you sign up for the Advantage plan, Medicare will automatically notify your old drug plan and update your records. No need to 'cancel' Original Medicare.
What Changes After You Switch?
| Feature | Original Medicare | Medicare Advantage |
|---|---|---|
| Premium | Standard Part B + Supplement | Standard Part B + Plan Premium ($0 common) |
| Out-of-Pocket Cap | None (Unlimited Risk) | Included (Required by Law) |
| Extra Benefits | None | Dental, Vision, OTC, Fitness |
| Network | Any doctor accepting Medicare | Provider network (HMO or PPO) |
Check Your Network
The #1 regret people have after switching is finding out their specialist isn't in-network. Check that your doctors are in-network BEFORE you switch!
Trial Rights for New Switchers
If this is the first time you have ever joined a Medicare Advantage plan, you have a 'Trial Right.' This means if you don't like it, you can switch back to Original Medicare within the first 12 months and, in most cases, buy a Medigap plan without health questions.
Pre-Switch Checklist: What to Verify Before Enrolling
| Item to Check | How to Verify | Why It Matters |
|---|---|---|
| Primary care doctor in-network | Call the office directly; ask about specific plan name | Losing your PCP is the #1 post-switch regret |
| Specialists in-network | Call each specialist you see regularly | Out-of-network specialist visits = full cost or denial |
| Your hospital in-network | Check plan's online directory or call member services | Out-of-network hospital = no MA coverage on HMO plans |
| Your prescriptions on formulary | Enter drugs on Medicare.gov Plan Finder | Formulary gaps can cost hundreds extra per month |
| Your pharmacy is preferred | Check plan's pharmacy locator tool | Non-preferred pharmacy can double your drug copays |
HMO vs PPO: Which MA Plan Type Fits Your Needs?
Most MA plans are either HMOs or PPOs. HMOs typically have lower premiums and stricter networks (in-network only, referrals required for specialists). PPOs allow out-of-network providers at higher cost and don't require referrals. Most zero-premium plans are HMOs — if you see specialists frequently or travel often, a PPO may be worth a higher premium.
Your Medigap and Part D Plans Cancel Automatically
When your Medicare Advantage plan takes effect on January 1, your standalone Medigap supplement and standalone Part D plan are cancelled automatically — you do not need to call anyone to cancel them. Confirm the cancellation with your former Medigap insurer about 2 weeks into January to ensure no errant billing occurs.
$0 Premium Still Means $202.90/Month for Part B
A '$0 premium' MA plan means $0 extra beyond your Part B premium. You still pay $202.90/month for Part B, typically deducted from your Social Security check. Some MA plans offer a 'Part B giveback' that reduces this charge by up to $174.70/month — look for plans that list this benefit when comparing.
Returning to Medigap Later Is Not Guaranteed
If you switch to MA now and return to Original Medicare in future years, getting a Medigap policy typically requires medical underwriting — meaning insurers can deny you or charge higher rates based on health conditions. Only first-time MA members in year 1 have guaranteed Medigap issue rights (via the Trial Right). Plan for the long term before switching.
Key Takeaways
- ✓AEP (Oct 15 - Dec 7) is the standard window for switching
- ✓Advantage plans bundle drug coverage (MA-PD)
- ✓You must still pay your Part B monthly premium
- ✓Your old standalone Part D plan will be cancelled automatically
- ✓Verify all doctors and drugs before completing enrollment
- ✓First-time switchers have a 12-month 'Trial Right' to go back
Frequently Asked Questions
Disclaimer: SeniorPop is not affiliated with Medicare, Medicaid, or any government agency. Benefit availability varies by plan and location. Contact a licensed Medicare advisor for plan-specific information.