Two Ways to Fill Medicare's Gaps
Original Medicare (Parts A and B) is powerful but incomplete. It leaves you responsible for deductibles, coinsurance, and an uncapped 20% of most outpatient costs. To manage these exposures, most beneficiaries add either a Medicare Advantage plan (Part C) or a Medicare Supplement plan (Medigap). These two approaches work very differently.
How Medicare Advantage Works
Medicare Advantage plans are sold by private insurers and replace Original Medicare for most of your care. Instead of Medicare paying your providers directly, you use the plan's network and the insurer handles claims. Most plans bundle Part D drug coverage, and many add extras like dental, vision, hearing, gym memberships, and over-the-counter allowances.
The appeal is obvious: many Advantage plans carry $0 monthly premiums (you still pay Part B), and the extra benefits can be genuinely valuable. The trade-off is that you're working within a managed care structure — network restrictions, possible prior authorization requirements, and variable cost-sharing depending on how much care you use.
Advantage plans have annual out-of-pocket maximums — every plan must set an in-network ceiling, and the exact amount varies by plan and carrier — which provides a limit on your worst-case exposure. But within that ceiling, your costs depend heavily on your utilization. A healthy year with few medical needs may cost you very little. A year with a major surgery or chronic illness could cost significantly more.
How Medicare Supplement (Medigap) Works
Medigap plans work alongside Original Medicare — they don't replace it. When Medicare approves a claim, your Medigap plan automatically pays its share based on the plan letter you chose. There are no networks, no referrals, no prior authorizations, and — depending on your plan — almost no surprise bills.
Plan G, the most popular Medigap option in 2025, covers everything Original Medicare doesn't except the $257 Part B annual deductible. Once you've met that deductible, you have essentially $0 in medical cost-sharing for the rest of the year. Plan N is similar, with small copays ($20 for office visits, $50 for ER) in exchange for lower premiums.
The predictability is the core value proposition. You pay a consistent monthly premium and a known maximum annual amount — and then Medicare and your Medigap plan handle the rest, whether you're seeing your family doctor in Cheyenne or a specialist in Denver.
The Real Cost Comparison
The premium gap between Advantage and Supplement isn't as meaningful as it first appears. A $0-premium Medicare Advantage plan might expose you to $7,500+ in cost-sharing during a year with significant health needs. A $160/month Medigap Plan G costs $1,920/year in premiums, plus the $257 Part B deductible — and then covers virtually everything else.
If you're healthy and use little care, Advantage often wins on total annual cost. If you have chronic conditions, need regular specialist care, or face a serious illness, Supplement almost always comes out ahead in total spending — and offers far more predictability.
We've found that beneficiaries who prioritize peace of mind and cost predictability tend to prefer Medigap, while those who are healthy, budget-conscious, and comfortable with managed care networks often do well with Advantage. Neither answer is wrong — it depends on your priorities.
Our Recommendation for Wyoming and Utah
In Wyoming and rural Utah, we generally lean toward Medicare Supplement plans. Provider networks for Advantage plans are thinner in rural areas, and the risk of being out-of-network at your only nearby hospital is real. Medigap's nationwide, any-provider coverage eliminates that risk entirely.
For Wasatch Front Utah residents — Salt Lake City, Ogden, Provo — the calculus is different. Strong SelectHealth and Humana Advantage networks, competitive premiums, and bundled dental/vision make $0-premium Advantage plans genuinely attractive for healthy, urban beneficiaries.
The right answer is specific to your doctors, your health history, your prescriptions, and your county. Our Coverage Finder Quiz is a good starting point, and a 15-minute conversation with one of our local advisors will tell you more than any comparison website. And it won't cost you anything.
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