Both plans work with Original Medicare
Plan N and Plan G are Medicare Supplement plans, also called Medigap. They work after Original Medicare, meaning Part A and Part B, pays its share of approved covered services. They are not Medicare Advantage plans, they do not replace Medicare, and they generally do not include outpatient prescription drug coverage. Many people pair either plan with a separate Part D plan.
The Part B deductible is usually a wash
For people newly eligible for Medicare today, both Plan G and Plan N generally leave the annual Part B deductible to the beneficiary. In 2026, that deductible is $283. Because both plans handle this the same way for most new buyers, the real comparison is usually not the deductible. It is the premium difference, Plan N copays, and excess-charge exposure.
Plan G is usually the more predictable option
Plan G is often chosen by people who want fewer moving parts. After the Part B deductible is met, Plan G generally covers more of the standard Original Medicare cost sharing than Plan N, including Part B excess charges. The tradeoff is that Plan G often has a higher monthly premium. For some people, that premium buys peace of mind. For others, the extra premium is not worth it.
Plan N can be attractive when the savings are real
Plan N may have a lower monthly premium than Plan G in many markets. That can be attractive, especially for someone who does not use much care. But Plan N is not simply a cheaper Plan G. Medicare.gov notes that Plan N pays 100% of the cost of Part B services except for copays for some office visits and some emergency room visits. Plan N also does not cover Part B excess charges.
Part B excess charges are the misunderstood piece
A Part B excess charge can happen when a provider does not accept Medicare assignment and is allowed to charge more than the Medicare-approved amount, up to legal limits. Plan G covers Part B excess charges. Plan N does not. In some states or provider situations, excess charges may be rare. In other situations, they are worth paying attention to. The right answer depends on where and how you receive care.
Doctor use changes the math
Someone who sees doctors often may value Plan G's simplicity. Someone who rarely sees doctors may prefer Plan N if the premium savings are large enough. The comparison should include routine primary care, specialists, outpatient therapy, imaging, urgent care, travel, and whether the doctors you use accept Medicare assignment.
Premium savings should be measured yearly
Do not compare Plan N and Plan G only by monthly premium. Multiply the difference by 12. Then ask whether that yearly savings is enough to accept Plan N's possible office visit copays, emergency room copays, excess-charge exposure, and added attention to provider billing. Sometimes the savings are worth it. Sometimes they are too small to justify the hassle.
Carrier choice still matters
A standardized Plan G from one company has the same basic medical benefits as a standardized Plan G from another company in most states. The same idea applies to Plan N. But premiums, household discounts, rate history, underwriting, billing, and service can still vary. The plan letter is only half the comparison; the company and price history matter too.
How to choose between Plan N and Plan G
Choose Plan G when you want broader predictability and the premium difference feels reasonable. Consider Plan N when the premium savings are meaningful, your providers accept Medicare assignment, you understand the copays, and you are comfortable with a little more cost-sharing uncertainty. The right answer is not universal. It is the plan whose tradeoffs still make sense after a bad year, not just during a healthy one.