Medical Bills & Health Insurance Help in Northern Mariana Islands
Northern Mariana Islands is a U.S. territory, so the rules are different from the 50 states: there is no ACA individual marketplace here, no premium tax credits, and Medicaid runs on a capped federal allotment under Section 1108 with its own eligibility limits. Here is what applies to you in Northern Mariana Islands, plus the free tools you can use on any bill.
Coverage and enrollment in Northern Mariana Islands
No ACA marketplace — Medicaid only
There is no ACA individual marketplace here. Residents cannot buy a subsidized marketplace plan, and premium tax credits and cost-sharing reductions are not available. Coverage generally comes from Medicaid, an employer, or Medicare.
Open enrollment: No ACA marketplace — Medicaid enrollment is year-round
Visit No ACA marketplace — Medicaid onlyCNMI Medicaid
100% fee-for-service, with one hospital serving the territory.
Territory Medicaid is funded by a capped federal allotment (Social Security Act §1108) at a statutory 55% match, so income limits and covered services differ from the states. Verify eligibility directly with the program.
Free Medicare counseling (SHIP): 1-670-233-2755
CNMI Medicaid websiteNorthern Mariana Islands has no dedicated patient-billing statute in our registry, so the federal baseline applies: non-profit hospitals must offer financial assistance under IRS §501(r) (26 U.S.C. §501(r)), and the federal No Surprises Act limits most surprise out-of-network bills. Ask the hospital for its written financial assistance policy — they are required to have one.
How coverage really works in Northern Mariana Islands
- Federal Medicaid funding is capped each year under Section 1108 of the Social Security Act, instead of the open-ended match the 50 states and DC receive.
- The federal matching rate (FMAP) is set by statute at 55% rather than calculated from per-capita income, so local funds must cover a larger share.
- Because funding is capped, income limits, covered services, and provider payment can change when the allotment runs low. Always confirm current eligibility with the local agency.
- CNMI runs Medicaid under a broad waiver granted under Section 1902(j) of the Social Security Act.
- There are no deductibles or co-payments under the CNMI Medicaid program.
- Since October 1, 2017, people with income above the eligibility limit may 'spend down' medical expenses to become eligible — ask about this if you were told you earn too much.
- Medicare Part A and Part B work here, but residents are not eligible for the Medicare Part D low-income subsidy (Extra Help). Instead, the territory's Medicaid program receives an Enhanced Allotment Plan (EAP) grant that must be used to provide Part D drugs to dual-eligible and low-income Medicare beneficiaries.
- Children's coverage runs through the waivered Medicaid program rather than a mainland-style CHIP plan. Confirm specifics with CNMI Medicaid.
Verify before you rely on it
- Provider directories such as the national NPPES registry have thin coverage here — a provider missing from a search does not mean they do not exist.
- Program names, income limits, and phone numbers change frequently in the territories. Verify anything you plan to act on directly with the agency before relying on it.
- With a single hospital serving the Commonwealth, specialty care often requires off-island referral. Confirm authorization and who pays for travel before treatment.
Sources (last reviewed 2026-06): Medicaid.gov — CNMI state overview; MACPAC — Medicaid and CHIP in the U.S. Territories (Congressional testimony, Mar 2021); CMS — Health insurance marketplaces and the U.S. territories
Tools you can use on a Northern Mariana Islands bill
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Answer three short questions and we will point you to the right step for your situation in Northern Mariana Islands.