Plan G and Plan N are the two most popular Medigap options for new Medicare enrollees today. Both offer strong protection against Medicare's cost-sharing gaps, but they differ in monthly premium, copayment structure, and exposure to Part B excess charges. Choosing between them comes down to how often you use medical services and how much premium savings you are willing to trade for added out-of-pocket risk.
Plan G and Plan N both cover the Medicare Part A deductible, skilled nursing facility coinsurance, and foreign travel emergencies, but Plan G covers Part B excess charges and has no office-visit copays, while Plan N costs less per month and charges up to $20 copays for office visits and up to $50 for emergency room visits that do not result in inpatient admission. Neither plan covers the Part B deductible for 2020-and-later enrollees.
Because Medigap plans are federally standardized, Plan G and Plan N from any insurer must include the same core benefits. You can review the full standardized benefit chart at the Medicare.gov Medigap plan finder. Both plans include:
| Feature | Plan G | Plan N |
|---|---|---|
| Part B excess charges | Covered | NOT covered |
| Office visit copays | None | Up to $20 per visit |
| Emergency room copay (non-admission) | None | Up to $50 |
| Monthly premium (relative) | Higher | Lower |
| Part B deductible | Not covered* | Not covered* |
*People who first became eligible for Medicare on or after January 1, 2020 cannot purchase plans that cover the Part B deductible under federal law. Plan F, which covered the deductible, is no longer available to this group.
Medicare sets an approved amount for each covered service. Most doctors accept Medicare assignment, meaning they agree to accept that approved amount as payment in full. However, providers who do not accept assignment can charge up to 15 percent above the Medicare-approved amount. That additional amount is called a Part B excess charge. Plan G pays this; Plan N does not.
In practice, excess charges are rare. According to data published by CMS, the large majority of Medicare-participating providers accept assignment. If your doctors and specialists all accept Medicare assignment, Plan N's exposure to excess charges may matter very little. If you live in a state (such as Massachusetts, Minnesota, or Ohio) that bans excess charges by law, Plan N's only meaningful difference from Plan G is the office-visit and ER copays.
The most useful comparison is a simple break-even calculation:
You can run this comparison quickly using the Medigap cost calculator, which lets you enter your usage assumptions and see an estimated annual total for each plan type.
Premium gaps between Plan G and Plan N vary by insurer, location, age, and gender. In many markets, Plan N premiums run $20 to $50 per month less than Plan G for the same applicant. Over a decade, that difference compounds. However, insurer pricing practices and rate increase histories matter. Comparing multiple carriers for both plans before enrolling is important. Medicare.gov lists licensed insurers in your area, and a SHIP counselor can help you compare carrier-specific rate histories at no cost.
Medigap insurers use one of three methods to set premiums:
Understanding which method an insurer uses is as important as the initial premium quote, especially when comparing Plan G vs Plan N over a 10- or 20-year horizon.
For completeness, there is a High-Deductible Plan G (HDG) available in many states. HDG carries a significantly lower monthly premium than standard Plan G, but you pay all Medicare cost-sharing out of pocket until you reach a federally set annual deductible ($2,870 in 2025). After that deductible, HDG covers the same costs as standard Plan G.
High-Deductible Plan G is worth considering if you are generally healthy, want very low monthly premiums, and are comfortable absorbing up to the deductible amount in a bad year. It is not a match for people who anticipate frequent hospitalizations or significant specialist use, since you would likely reach the deductible and might have been better served by standard Plan G.
Because Plan G from one insurer must offer the same core benefits as Plan G from another insurer, the main variables when comparing insurers are premium, premium pricing method, customer service reputation, and rate increase history. The same logic applies to Plan N.
Rate increase history matters because some insurers offer low initial premiums but raise rates aggressively after the first year or two as the insured pool ages. An attained-age-rated policy may start cheaper than a community-rated or issue-age-rated policy but can become significantly more expensive by your 70s or 80s. Asking an insurer for its historical rate increase data for the specific plan you are considering is a reasonable and important step before committing.
A SHIP counselor in your state can help you access carrier-specific rate histories and compare options without any commission motive. You can also verify insurer licensing and complaint records through your state insurance department, and review plan information at Medicare.gov.
The Plan G vs Plan N decision ultimately comes down to a personal risk tolerance and utilization calculation. If you see your doctor frequently, visit specialists without referrals, or simply value the peace of mind of knowing there will be no copays or excess charge surprises, Plan G is the more comprehensive choice. If you are in good health, have few routine visits, and your providers all accept Medicare assignment, Plan N's lower premium can deliver genuine savings year over year.
Whatever you decide, enroll during your Medigap Open Enrollment Period when possible to secure guaranteed-issue rights, and always verify current premium information at Medicare.gov or through a licensed insurer before applying.
No. Plan N does not cover Part B excess charges, which are additional amounts that providers who do not accept Medicare assignment can charge (up to 15 percent above the Medicare-approved amount). If your providers all accept Medicare assignment, or if your state bans excess charges, this gap may not affect you.
Neither plan is universally better. Plan G offers more complete coverage with no copays and covers excess charges, making it simpler and more comprehensive. Plan N has lower premiums but adds copays and excess charge exposure. The better plan depends on your health utilization, provider choices, and how much you value premium savings versus coverage completeness.
You can apply to switch plans at any time, but outside of guaranteed-issue periods, insurers in most states can review your health history and decline your application or charge higher premiums. This is why it is often wise to start with the level of coverage you think you will want long term.
Medicare.gov's Medigap plan finder shows licensed insurers and available plans in your ZIP code. You can also work with a licensed broker or contact a free SHIP counselor in your state for side-by-side premium comparisons.