Medicare Plan G vs. Plan N: Which Should You Choose?

Choose Plan G if you want maximum predictability — no copays at the doctor's office and full protection against Part B excess charges. Choose Plan N if you're healthy, see a doctor rarely, and want lower monthly premiums you can bank every month. The gap between them comes down to the math: Plan N averages roughly $49 a month less than Plan G at age 65 (MoneyGeek) — that's a meaningful annual saving before you see a single doctor. Both plans leave you the $283 Part B deductible in 2026, but Plan N adds copays of up to $20 per office visit and $50 per ER visit that doesn't admit you, plus any excess charges a non-assignment doctor bills (InCare). For most mid-decision buyers, the real question isn't which is "better." It's which one you can live with emotionally and financially over a decade of premium increases.

Side-by-Side: How G and N Differ on the Costs That Matter

The two plans cover nearly identical ground — the Part A hospital deductible, Part A coinsurance, and most of the 20% Part B coinsurance you'd otherwise owe (InCare). The table below lines them up on the buyer concerns that actually move your annual budget.

The True Cost of Plan N: Where the Savings Disappear

Plan N's lower premium looks like a clear win until you run the year-end math. Every office visit that isn't preventive can carry a copay of up to $20, and an emergency room trip that doesn't result in admission can add up to $50 (MoneyGeek). On top of that, Plan N does not cover Part B excess charges — the up to 15% a doctor who doesn't accept Medicare assignment can bill above the approved amount (InCare).

Here's a realistic scenario. Say you average four office visits a year and one non-admitted ER trip. At the top copay, that's $130 in copays ($20 × 4 + $50). Against the roughly $49-a-month premium gap from the national averages, Plan N still leaves you ahead — but only if your doctor accepts assignment and you rarely hit specialists. Push that to a dozen visits and two ER trips, and the copays climb toward $340, eating most of the advantage.

Preventive care muddies the picture further. Medicare covers your annual wellness visit and many screenings at no cost, but the InCare guide warns that when a wellness visit turns into treatment for a new symptom, that portion can be billed like a regular office visit and generate cost-sharing (InCare). Ask how the visit will be coded before you schedule it.

Mini-verdict: Plan N wins for the low-utilization enrollee; the savings erode in proportion to how often you actually use care.

The Stability Factor: Which Premium Climbs Faster?

The real cost of a Medigap plan is not this year's premium — it's how that premium ratchets up every birthday. MoneyGeek explains that with attained-age-rated pricing, your rate increases each year as you get older, and a plan that looks cheap at 65 can overtake a community-rated one by 75 (MoneyGeek). Because most Medigap policies sold in California use attained-age pricing, both Plan G and Plan N will rise over time — but they rise off different bases.

Plan N's starting advantage is real and persistent. National averages show Plan N at roughly $171 versus Plan G's $220 at age 65, and the pattern holds at 75, where the averages widen to about $221 for Plan N and higher for Plan G (MoneyGeek). The premium gap is compounded over a decade of retirement, which is why the choice is partly a bet on how long you'll stay healthy.

The flip side is that Plan N doesn't cap your downside on the medical side. Plan G's premium buys you certainty: no copays and no excess-charge exposure, no matter how much care you need in a given year. Plan N's lower premium is really a wager that your care needs stay modest — and that's a bet many healthy enrollees are willing to place, which is why it remains the second-most-popular Medigap plan (Kiplinger).

Mini-verdict: On rate stability, neither plan wins outright — both use the same pricing method — but Plan N's lower starting point keeps more distance under you over time, as long as your care stays light.

The California Birthday Rule: Why You Can Switch Later

California gives you one advantage most states lack. Under the Birthday Rule, every year within the 30 days after your birthday you can switch to another Medigap plan of equal or lesser coverage from a different insurer — without answering health questions — as long as the new plan isn't changing to a more restrictive benefit package. This is a powerful hedge when you're deciding between G and N.

It means the choice is less permanent than it feels. If you start on Plan N to bank the premium savings and your health changes, you may have an annual window to move to Plan G without medical underwriting. That's a significant freedom for buyers who are cost-conscious now but worry about the future.

A note of caution: the Birthday Rule generally lets you switch between plans of equal or lesser coverage, and the mechanics depend on the specific carriers and policy language. Because Plan G covers more than Plan N (no copays, and it pays excess charges), moving from N to G can be treated as an upgrade that falls outside the automatic window. Confirm the exact switching rules with your insurer or a licensed agent before you rely on the annual window — don't assume a downgrade-to-upgrade move is automatically allowed. In California, Plan G is the most-enrolled Medigap plan at 28.70% of supplement policyholders, with Plan N second at 10.22% (Connie Health).

Choose Plan N if… / Choose Plan G if…

The decision ultimately lands on your expected use of care and your tolerance for a surprise bill.

Pick Plan N if you see a doctor a few times a year, your regular providers accept Medicare assignment, you want the lowest monthly premium, and you can absorb a rare $50 ER copay without stress. The premium savings are real and stack up year after year.

Pick Plan G if you have ongoing conditions that pull you into specialists and the ER, you dislike copays at every visit, or you simply want one predictable monthly bill that covers nearly everything except the $283 Part B deductible. It is the most popular plan for new enrollees precisely because it removes the guesswork (MoneyGeek).

If you're genuinely on the fence, run the math on a normal year: count your visits, add up the likely copays, and compare them to the premium gap. When the copays are meaningfully smaller than the savings, Plan N wins. When they're close to equal, Plan G's predictability is worth the difference.