Is Switching from Medigap to Medicare Advantage Worth It?
Medicare Decision Guide
Is Switching from Medigap to Medicare Advantage Worth It?
A clear-eyed, honest analysis — with real numbers, real tradeoffs, and a framework for making the decision that’s right for your situation
Short Summary
For many seniors, switching from Medigap to Medicare Advantage is absolutely worth it — saving $150 to $350+ per month in premiums while gaining dental, vision, and other extra benefits. But the decision isn’t one-size-fits-all. The answer depends on your health, your healthcare usage, your doctors’ network status, your medications, and your tolerance for the added complexity that Medicare Advantage brings. This guide gives you a full, balanced analysis — with a financial framework, a pros-and-cons breakdown, real scenarios, and a clear self-assessment checklist so you can determine whether this switch makes sense for your specific situation.
The Question I Kept Asking Myself at 67
I remember sitting at my kitchen table with a yellow legal pad — the kind you use when a decision feels too big for a screen — and writing two words at the top: Worth it?
My Medigap premium had just hit $312 a month. My insurance agent had mentioned zero premium Medicare Advantage plans. I’d done my initial research. I had a shortlist of plans where my doctor was in-network and my medications were covered. The math showed I’d save over $3,000 a year.
But I’d also read enough to know that the switch wasn’t without risk. That returning to Medigap later could be difficult if my health changed. That copays would add up in a bad health year. That prior authorization was a real thing. That networks could shrink.
So: was it worth it?
This is the exact question I asked myself at 67. My complete answer and what I ultimately did is in I Refused to Pay High Rates at 67 — the full account of my research, my decision, and what happened after. In this guide, I want to help you work through the same question for your own situation.
How Do You Figure Out If the Switch Is Financially Worth It?
The financial analysis comes down to one core question: How much healthcare do you actually use in a year?
Here’s the framework I used on that legal pad:
Your Personal Break-Even Calculation
- Your annual Medigap cost: Monthly premium × 12 + separate Part D premium × 12 = Total A
- Your estimated annual Medicare Advantage cost: Add up all realistic copays from your typical year of doctor visits, specialist visits, medications. This is Total B.
- Your break-even: If Total A exceeds Total B significantly, switching likely saves you money. The bigger the gap, the more financially compelling the switch.
- Your worst-case scenario under Medicare Advantage: What’s the plan’s out-of-pocket maximum? That’s the most you’d pay in a catastrophic year. Compare that to what you’d spend in premiums over the same period under Medigap.
- Your 10-year projection: Medigap premiums grow ~6–10% annually. Medicare Advantage zero premiums tend to be more stable. Run the math over 10 years — the gap often widens substantially over time.
What Are the Real Pros and Cons? (No Sugar-Coating)
I want to give you the same honest assessment I gave myself — not a sales pitch for either side.
Who Should Switch — and Who Should Stay on Medigap?
Let me be as direct as I can here, based on my own experience and the conversations I’ve had with other seniors who’ve faced this decision:
✅ Switching is likely worth it if ALL of the following are true:
- Your current Medigap premium is $150+/month (the savings math becomes compelling)
- You are in reasonably good health with moderate or low healthcare use
- Your primary care doctor and key specialists are in-network on a quality plan
- Your current medications are covered on the plan’s formulary at reasonable tiers
- A zero premium plan with 4+ stars and a manageable OOP max is available in your area
- You understand and accept that returning to Medigap may be difficult if your health changes
❌ Think twice — or stay on Medigap — if any of these apply:
- You have serious chronic illness, history of frequent hospitalizations, or major medical events anticipated
- You take expensive specialty medications that may not be well-covered on Advantage formularies
- Your most important doctors are not in-network on any quality plan in your area
- You travel extensively and need seamless nationwide provider access
- Your area has limited or low-rated zero premium Advantage options
- The concept of prior authorization and network management causes you genuine anxiety or distress
What Did I Ultimately Decide — and Was It Worth It?
Yes. For me, it was absolutely worth it.
I enrolled in a zero premium Medicare Advantage plan with a $0 monthly premium, a 4.0-star rating, my primary care doctor in-network, all my medications covered at Tier 1–2, dental and vision included, and an out-of-pocket maximum of $4,500. I saved over $3,300 in the first year — and because my plan’s premium stayed at $0 while Medigap premiums in my old plan have continued rising, the gap in savings grows every year.
I’ve had one somewhat more challenging health year — a knee issue that required physical therapy and a specialist visit — and even then, my total out-of-pocket for the year was under $800. Compare that to the $3,744+ I would have paid in Medigap premiums alone. The math held up even in a harder year. I also used my dental benefit twice and my OTC allowance every quarter. I genuinely cannot identify a single aspect of this switch that I regret.
I would not make this decision based on a feeling or a neighbor’s recommendation or a television commercial. I’d make it based on five specific data points: (1) my Medigap premium, (2) my typical annual healthcare usage, (3) whether my doctors are in-network, (4) whether my medications are well-covered, and (5) what the plan’s out-of-pocket maximum is. If those five things line up favorably — and for many healthy, mid-60s-to-early-70s seniors in competitive markets, they do — then the switch is almost certainly worth it. If even one of those five is a significant problem, investigate further before committing.
Questions I Hear Most Often About Whether This Switch Is Worth Making
Q: What if I switch and then develop a serious illness — am I stuck on Medicare Advantage?
Not necessarily stuck — but returning to Medigap in most states will require medical underwriting if you don’t have a qualifying event. Your Advantage plan must cover your illness up to your out-of-pocket maximum. You can also switch to a different Medicare Advantage plan each year during AEP if you find a better option. The key is that your OOP max limits your worst-case annual exposure, regardless of diagnosis.
Q: I’ve heard horror stories about Medicare Advantage denying care. Is that a real risk?
Prior authorization is real, and some plans use it more aggressively than others. This is why star ratings and plan quality matter — higher-rated plans tend to have better appeals processes and more reasonable authorization policies. It’s also worth reading the prior authorization section of the Evidence of Coverage document before you enroll. I’d be dishonest if I said this was never an issue — but for routine care, it rarely is in practice.
Q: Can I switch from Medigap to Medicare Advantage if I’m already 73?
Yes. There’s no age limit on switching. Older seniors may actually benefit even more from the premium savings since Medigap premiums typically escalate sharply with age. However, older seniors with more complex health needs should evaluate the switch especially carefully, as their healthcare utilization is likely higher and their copay exposure under Advantage could be more significant.
Q: Is there a way to test Medicare Advantage before fully committing?
Yes — sort of. If you enroll in Medicare Advantage for the first time, you have a 12-month “trial right.” Within that first year, if you decide Medicare Advantage isn’t working for you, you have a guaranteed right to return to Medigap without medical underwriting. This safety net makes the first-year switch significantly lower risk. After year one, the trial right expires.
A Step-by-Step Decision Process for Making This Choice
- Calculate your current total Medicare cost. Medigap premium + Part D premium + typical out-of-pocket costs last year. This is your baseline.
- Go to Medicare.gov and find zero premium plans in your ZIP code. Filter for $0 premium, 4+ stars. See what you’re working with.
- Verify your doctors on your top 2–3 plans. Call billing offices directly. If your most important doctors aren’t in-network, eliminate those plans.
- Run your medications on Medicare.gov’s drug estimator. Get an annual drug cost estimate for each plan. Add that to your realistic copay estimate for the year.
- Note the out-of-pocket maximum on each plan. Understand your worst-case scenario. Compare to what you’d pay in Medigap premiums over the same period.
- Call your SHIP counselor. Bring your shortlist, your numbers, and your questions. Let them validate or challenge your thinking.
- Make your decision — deliberately. If the math is clearly in favor of Medicare Advantage, and your doctors and medications check out, enroll during AEP and cancel your Medigap policy after January 1.
This is the Exact Question I Asked Myself at 67
My complete answer — the research, the decision, the numbers, and what happened after — is in I Refused to Pay High Rates at 67. Read it before you decide anything. Then run your own numbers with Medicare.gov’s Plan Finder.
👉 Medicare.gov/plan-compare — start with your ZIP code and take it one step at a time.
