Utah · Medicare Supplement

Medigap Plan G vs. Plan N in Utah: Which Saves More in 2026?

Every Plan G versus Plan N article on the internet says the same three things: N is cheaper, N has copays, N does not cover excess charges. All true, and all national. The Utah answer turns on three things those articles cannot know: how many Utah clinicians are actually able to bill an excess charge, the fact that Utah has no state law forbidding them, and a 2025 Utah statute that makes G-to-N a one-way door. I pulled the CMS clinician file for the state and counted. Here is what decides it.

Medicare On Main Data Desk

Published September 26, 2026 · 10 min read · Reviewed by Brian Penner, 22+ years in Medicare

Some proportion first. In June 2026, 221,009 of Utah's 490,235 Medicare beneficiaries were in Original Medicare, and most of them pair it with a supplement. G and N are the two letters almost all of them are choosing between, because the plans that covered the Part B deductible closed to new Medicare enrollees in 2020. This is the same decision the Colorado version of this post works through for Mesa County; what follows is the Utah-specific evidence, not a restatement.

What the chart actually says

Source: Medicare.gov — Compare Medigap plan benefits (2026 chart); the Part B deductible and high-deductible figures are 2026 amounts from the CMS fact sheet and the chart's footnotes. Plans are standardized: a Plan N sold in Logan pays the same claims as a Plan N sold in St. George.

The copay footnote is worth quoting exactly, because "some office visits" is doing work: "Plan N pays 100% of the costs of Part B coinsurance. You must pay a copayment of up to $20 for some office visits and up to $50 for emergency room visits when you aren't admitted as an inpatient." The copay attaches to visits that Medicare bills as office visits; it does not attach to lab work, imaging, or an infusion in a hospital outpatient department, and if the ER visit ends in admission, the $50 is waived. The other line, excess charges, is where Utah needs its own data.

Excess charges in Utah, counted

Medicare.gov defines the term. A provider who "accepts the Medicare-approved amount as payment in full for a covered service" is "accepting assignment," and "Most doctors, providers, and suppliers accept assignment, but always check to make sure that yours do." A non-participating provider may "accept the Medicare-approved amount for services on a case-by-case basis," and "can charge you more than the Medicare-approved amount. In many cases, the charge can't be more than 15% above the Medicare-approved amount for non-participating healthcare providers. This amount is called 'the limiting charge.'" Plan G pays that charge. Plan N leaves it to you.

CMS publishes which side every clinician is on. The Doctors and Clinicians National Downloadable File, released September 10, 2026, carries a flag per clinician: "Y = Clinician accepts Medicare approved amount as payment in full" or "M = Clinician may accept Medicare Assignment." I pulled every Utah row on September 26. There are 15,816 distinct clinicians. 14,517 of them, 91.8%, are flagged Y at every location they practice. 1,299, 8.2%, are flagged M somewhere, which is the entire pool that could ever bill a Plan N holder an excess charge in Utah. Here is where that pool sits.

Source: CMS Doctors and Clinicians National Downloadable File (data.cms.gov, released September 10, 2026), Utah rows, unique clinician-specialty pairs. A clinician is counted as "may accept" if the flag appears at any of their practice locations, so these are ceilings on exposure, not counts of charges billed.

Three things stand out. The flag is concentrated in behavioral health, chiropractic and private-practice therapy, where a large share of Utah's opted-out providers also sit; it is thin in primary care, at 5.4% of family practice and 4.7% of internal medicine. The big systems are almost uniformly on the accepting side: of 3,919 clinicians the file lists under IHC Health Services Inc, Intermountain Health's Utah entity, 9 carry the flag, and of 1,754 under University of Utah Adult Services, 2 do. And geography matters less than specialty: Salt Lake City has 417 flagged clinicians out of 4,958, St. George 58 of 1,323, Moab 6 of 55, Blanding 4 of 54, Monticello 1 of 19. If your doctors are inside one of the two big systems, the excess-charge line on Plan N is close to a dead letter. If you see an out-of-system psychiatrist, a chiropractor, or a private physical therapist, it is live.

One group is outside this table entirely. The CMS Opt Out Affidavits file lists 674 Utah providers who have opted out of Medicare, 29 of them in family practice or internal medicine. Medicare.gov: "Medicare won't pay for items or services you get from provider that opts out, except in emergencies." Neither G nor N pays anything there either, because a supplement only pays alongside a Medicare claim. Our concierge medicine post covers that arrangement.

Why Utah is not Colorado, or Pennsylvania

The federal limiting charge is the only cap Utah has. A handful of states have passed their own laws forbidding excess charges on Medicare patients altogether, and in those states Plan N's missing line costs nothing. Utah has no such statute; its Medicare supplement law, § 31A-22-620, governs how policies are sold and switched, not what physicians may bill. The practical consequence is that the 15% exposure on N is real in Utah, and it travels: a Plan N holder from Cedar City who sees a non-participating specialist in Las Vegas or Phoenix owes the same limiting charge there. Plan G pays it in every state.

The break-even, without a premium quote

I do not quote a Medigap premium in print, because the number depends on your age, your ZIP, the company, and which of three pricing methods it uses, and Medicare.gov warns that attained-age policies "may be the least expensive at first, but they can eventually become the most expensive." What I can give you is the arithmetic. Get a Plan G quote and a Plan N quote from the same company at your ZIP, using the Utah Insurance Department's comparison or an agent, subtract, and multiply by twelve. That annual gap is what N has to earn back.

Arithmetic on the chart's copay ceilings; the gap values are illustrations, not quotes. Excess charges, if any, add to the N side of the ledger.

Read it as a visit budget. If your gap is $30 a month, Plan N is ahead until you have paid eighteen $20 copays in a year, and that is before any excess charge. Someone with a primary care doctor, an annual dermatology check and a cardiologist twice a year uses four or five. Someone with rheumatology, oncology follow-up and a pain clinic can use eighteen by August. The visit count you already know from last year's calendar is the whole decision, plus one door.

The door: Utah's birthday window only opens downward

This is the piece the national articles cannot include. Since May 7, 2025, Utah Code § 31A-22-620(3)(g) requires an issuer, in the 60 days beginning on your birthday each year, to let you move to a Medicare supplement plan it offers that is "considered a comparable or lower tier plan," without medical underwriting. Plan N is a lower tier than Plan G. So a Utah Plan G holder whose premium has outgrown their visit count can step down to N on their next birthday, same company, no health questions. A Plan N holder who develops a condition that means monthly specialist visits, and who now wants G, cannot use the window to step up; that is a full application with health questions unless they are inside their six-month Medigap open enrollment period or hold a guaranteed-issue right. Our birthday-rule post runs six switches against the statute.

That asymmetry changes the advice for anyone who is unsure. If you cannot say with confidence that your visit count will stay low, buy G in your open enrollment period and step down later; the window will still be there. Buying N to save on the premium and hoping to upgrade if you get sick is the one sequence Utah law does not protect.

Who fits which

Plan N fits a person whose doctors are inside Intermountain, University of Utah Health, or another large group that accepts assignment; who sees a doctor a handful of times a year; who keeps a few hundred dollars of copays as a rounding error; and who is comfortable that a rare out-of-system visit could carry a limiting charge. Plan G fits a person with frequent specialist visits, a chronic condition that has just been diagnosed, care in more than one state, or a preference for a bill that never varies. In Grand County, where 33.3% of adults live with high blood pressure and 11.2% with diabetes per CDC PLACES, and 1,762 of 2,299 beneficiaries are in Original Medicare, the honest split is close to even, and the tie-breaker is the door above.

What I would do, in order

Write down every clinician you saw last year and count the visits. Look each one up in Medicare.gov's provider search or the CMS file and note the assignment flag. Get a G quote and an N quote from the same company at your ZIP, ask which pricing method it uses, and subtract. Divide the annual gap by $20. If your visit count is well under that number and every clinician is flagged Y, N is the rational buy. If either condition fails, or if your health picture is changing, buy G and remember the birthday window. Then buy the drug plan the same week, because the $283 deductible and the copays are small next to a formulary that does not carry your prescription.

How we know all this: the Medicare On Main Data Desk frames every article with public data — here, Medicare.gov's 2026 Medigap benefit chart and its Plan N and high-deductible footnotes, quoted as published; the CMS fact sheet of November 14, 2025 for the 2026 Part B deductible; Medicare.gov's assignment page for the definitions of accepting assignment, non-participating, the limiting charge and opt-out; the CMS Doctors and Clinicians National Downloadable File released September 10, 2026, every Utah row read on September 26 and tallied by unique NPI, specialty, group and city, with the data dictionary's definitions of the Y and M flags; the CMS Opt Out Affidavits file for Utah, read the same day; Medicare.gov's Medigap pricing page; Utah Code § 31A-22-620(3)(g), quoted as published; the CMS Medicare Monthly Enrollment file for Utah and Grand County (June 2026); and CDC PLACES county data (2023). The break-even table is arithmetic on the chart's copay ceilings, not a quote; no Medigap premium is stated, and no carrier is named, endorsed or criticized. Assignment flags describe a provider's Medicare status, not any plan's network. This is education, not advice; confirm plans, costs and eligibility with a licensed agent or Medicare.gov. We take no payment from any carrier to feature a plan.