MedicareJune 10, 202618 min read2 parts

Medigap (Medicare Supplement) Plans Explained: Plan G vs Plan N vs High-Deductible G and Why Plan F Is a Trap in 2025

Welcome to the Medicare Hunger Games: Why Your Choice This Year Matters More Than Ever Congratulations. You’ve reached the age where your mailbox is officially a fire hazard, stuffed to the brim with glossy brochures…

01Part 1 · The Essentials

Welcome to the Medicare Hunger Games: Why Your Choice This Year Matters More Than Ever

Congratulations. You’ve reached the age where your mailbox is officially a fire hazard, stuffed to the brim with glossy brochures featuring silver-haired couples laughing at sunsets. They want you to believe that choosing a Medicare Supplement plan is as easy as picking a flavor of yogurt. It isn't. In reality, you are navigating a bureaucratic minefield where one wrong click during your Initial Enrollment Period (IEP) can cost you thousands of dollars in late enrollment penalties or leave you "locked in" to a plan that doesn't fit your budget once your health actually starts to decline. At usainsuranceasy.com, we aren't here to sell you a dream; we’re here to help you survive the CMS rulebook without losing your mind or your life savings.

In 2025, the Medicare landscape is shifting beneath our feet. Thanks to the Inflation Reduction Act, Part D prescription drug coverage is getting a massive overhaul—including a glorious $2,000 out-of-pocket cap and the elimination of the "donut hole" (which was less of a delicious pastry and more of a financial abyss). But while the government is fixing the drug side, the world of Medigap remains a shark tank of private carriers like UnitedHealthcare (AARP), Mutual of Omaha, and Aetna fighting for your premiums. If you’re sitting there wondering whether you should stick with the crowd-favorite Plan G, save a few bucks with Plan N, or gamble on a High-Deductible Plan G, you’ve come to the right place. And if you’re still clinging to Plan F like it’s a vintage luxury car, we need to have a very serious talk about why that "luxury" is actually a money pit.

Before we dive into the alphabet soup of plans A, B, C, D, F, G, K, L, M, and N, let’s get one thing straight: Medigap is not Medicare Advantage (Part C). If you want an HMO where a cubicle-dweller tells you which doctor you can see, go find a different article. Medigap is for the person who wants to keep Original Medicare (Parts A and B), see any doctor in the U.S. who accepts Medicare (which is about 90% of them), and have a secondary insurance policy that picks up the "gaps"—the 20% coinsurance, copays, and deductibles that leave most seniors broke. In 2025, the standard Part B premium is $185 a month (or more if you’re hit by IRMAA), and without a Supplement, that 20% bill for a $100,000 heart surgery will be your responsibility. Let’s make sure that doesn't happen.

  • Standardization: Every Plan G offered by Humana is legally required to cover the exact same benefits as a Plan G offered by Cigna. The only difference is the price and the carrier's reputation for customer service.
  • Guaranteed Issue: You have a six-month window starting the month you turn 65 and enroll in Part B to buy any Medigap plan with no medical underwriting. Miss this, and you might be denied coverage forever based on your health history.
  • The Network: With Medigap, your "network" is the entire United States. If the provider takes Medicare, they take your Medigap plan. Period. No referrals, no "staying in the system."

The 2025 Reality Check: Why Plan F is a Financial Trap for the Unwary

For decades, Plan F was the "Cadillac" of Medicare. It covered everything—every deductible, every copay, every cent. You could walk into a hospital, get a new hip, walk out, and never see a bill. But as of January 1, 2020, Congress effectively "closed" Plan F (and Plan C) to new beneficiaries. If you weren't eligible for Medicare before that date, you can't buy it. If you were eligible and you still have it, you might think you're sitting pretty. You’re not. You’re sitting in what we in the industry call a "closed block of business," and that is a very dangerous place for your wallet to be.

Because no new, healthy 65-year-olds are entering the Plan F pool, the average age of Plan F policyholders is rising every year. Older people use more medical services. When claims go up, the insurance companies (who are not charities, despite what their commercials suggest) raise premiums to maintain their profit margins. We are seeing Plan F premiums skyrocket compared to Plan G, often for the exact same coverage plus one tiny benefit: the Part B deductible. In 2025, the Part B deductible is only $257. If you are paying $600 a year more in premiums for Plan F just to avoid a $257 deductible, you aren't "fully covered"—you’re being mathematically exploited.

Switching from Plan F to Plan G is the single easiest way for a senior to save $500 to $1,000 a year without losing a single meaningful benefit. The only catch? Medical underwriting. Unless you live in a "guaranteed issue" state like New York, Connecticut, or Massachusetts, or you’re in a "birthday rule" state like California or Oregon, you’ll have to answer health questions to switch. If you have major health issues, you might be stuck in the Plan F "death spiral." But if you’re relatively healthy, staying in Plan F in 2025 is essentially volunteering to pay a "laziness tax" to your insurance carrier.

  • The Math: Compare your annual Plan F premium to a Plan G quote. Subtract $257 (the Part B deductible). If the remainder is positive, you are overpaying.
  • The Risk: Closed blocks of insurance always get more expensive faster than open blocks. Plan G is the new "gold standard" where all the new, healthy 65-year-olds are going.
  • The Exception: If you have chronic conditions and live in a state without "guaranteed issue" rights, do not cancel your Plan F until you have been medically approved for a new Plan G.

Plan G: The New Heavyweight Champion of Medigap

Since the decline of Plan F, Plan G has taken the throne. It is currently the most comprehensive plan available to new Medicare beneficiaries. Its popularity is rooted in its simplicity: it covers every single "gap" in Medicare except for the Part B annual deductible. Once you pay that first $257 out of your pocket at the doctor’s office in 2025, Plan G kicks in and pays 100% of everything else for the rest of the year. This includes the Part A hospital deductible (a whopping $1,676 per benefit period in 2025), skilled nursing facility coinsurance, and those pesky Part B excess charges that some specialist doctors love to tack on.

Why do we recommend Plan G over almost anything else for the average retiree? Predictability. When you’re on a fixed income, the last thing you want is a $3,000 bill because you went to the ER three times in one year. With Plan G, your only variable is your monthly premium and that one-time $257 deductible. Carriers like Blue Cross Blue Shield and Anthem have massive Plan G pools, which helps stabilize rate increases over time. While your premium will likely go up 3% to 6% annually due to inflation and age, you won't see the erratic spikes common in smaller or closed-off plans.

However, Plan G can be pricey depending on where you live. In Florida or New York, you might see premiums north of $250 a month, whereas in the Midwest, you might find it for $120. If you are looking for the absolute "set it and forget it" experience where you never have to look at a medical bill again (other than to make sure the doctor didn't double-charge for a tongue depressor), Plan G is your winner. Just remember that Plan G does not include silver sneakers or dental/vision/hearing perks—those are the "shiny objects" Medicare Advantage plans use to distract you from their limited networks and high MOOP (Maximum Out-of-Pocket) costs, which can hit $9,350 in-network in 2025.

  1. Part A Deductible: Covered 100% ($1,676 saved per hospital stay).
  2. Part B Coinsurance: Covered 100% (The 20% that Medicare doesn't pay).
  3. Part B Excess Charges: Covered 100% (Crucial in states like Pennsylvania or for specialists who "opt out" of standard Medicare pricing).
  4. Foreign Travel Emergency: Covered up to 80% (up to $50,000 lifetime limit).

Plan N: The Budget-Savvy Alternative with a Twist

If Plan G is a first-class ticket, Plan N is "extra legroom" economy. It’s for the person who wants the security of a Supplement but is willing to do a little "co-paying" in exchange for a significantly lower monthly premium. Typically, Plan N is $30 to $50 a month cheaper than Plan G. That might not sound like much, but over 20 years of retirement, that’s $12,000 in your pocket rather than the insurance company's. But Plan N isn't just "Plan G Lite"; it has specific rules that you need to understand so you don't feel "nickel-and-dimed" at the doctor's office.

With Plan N, you still pay the $257 Part B deductible. Once that’s met, you may have a copay of up to $20 for every doctor’s visit (including specialists) and a copay of up to $50 for an emergency room visit (waived if you are admitted to the hospital). Here’s the "sneaky" part: Plan N does not cover Part B Excess Charges. While these are rare—prohibited in states like NY, OH, PA, CT, MA, MN, RI, and VT—in other states, a doctor can charge you up to 15% above the Medicare-approved amount. If you live in a state where excess charges are legal and you see a lot of "non-participating" specialists, Plan N could be a headache.

The secret benefit of Plan N often goes unmentioned: its rate stability. Because Plan N requires users to pay a small amount out of pocket, people on Plan N tend to go to the doctor less frivolously than those on Plan G or F. This lower "utilization" often results in smaller annual rate increases. If you are a relatively healthy person who doesn’t go to the doctor every time you sneeze, Plan N is often the mathematically superior choice over the long haul. You are essentially betting that your $20 copays won't add up to more than the $600 a year you're saving in premiums. Spoiler alert: Usually, you win that bet.

"Plan N is the thinking person's Medigap. It rewards you for being a responsible consumer of healthcare while still protecting you from the $50,000 disaster." - USA Insurance Easy Editorial Team
  • Premiums: Usually 25-35% lower than Plan G.
  • Copays: $0 to $20 per office visit; $50 per ER visit.
  • Excess Charges: You pay them. (Check if your state forbids this practice before buying).
  • Hospitalization: Just like Plan G, your Part A deductible and coinsurance are 100% covered.

High-Deductible Plan G: For the High-Rollers and the Healthy

Then we have the "High-Deductible Plan G" (HDG). This is the black sheep of the Medigap family, and it’s gainning massive traction in 2025. The premise is simple: You pay a very low premium (often as low as $40 to $60 a month) in exchange for taking on a large deductible before the plan pays a dime. For 2025, the High-Deductible G deductible is $2,870. This deductible is a combination of your Part B deductible ($257) and the 20% coinsurance you’d normally pay. Once you hit that $2,870 threshold, the plan turns into a standard Plan G and pays everything.

Who is this for? It’s for the person who has $3,000 sitting in a high-yield savings account or an HSA and wants to protect against a $200,000 catastrophe but isn't worried about the "small stuff." If you choose HDG, you are basically self-insuring for your routine care. If you only go to the doctor twice a year for checkups, you’ll never hit the deductible, and you’ll save thousands in premiums. However, if you get diagnosed with a chronic condition like cancer that requires expensive Part B drugs (infused in a clinic) or frequent dialysis, you will hit that $2,870 deductible in the first two months of the year, every year.