United States · Healthcare
How the United States healthcare system works — public vs private care, eligibility, and costs for residents and visitors.
AI-drafted, editorially reviewed. Confirm specifics with the official authority.
The US has no universal public healthcare. Most people are covered through an employer plan or buy coverage on the ACA Marketplace at HealthCare.gov, with Medicare for those 65+ and Medicaid for low-income residents under state-varying rules. Foreign nationals usually rely on employer or private insurance; lawfully-present immigrants can buy Marketplace plans but typically wait five years for Medicaid or Medicare. Care is very costly without coverage.
The US has no universal public healthcare; coverage is mostly private (employer plans or the ACA Marketplace at HealthCare.gov), with Medicare for those 65+ and Medicaid for low-income residents. Foreign nationals usually rely on employer or private insurance; lawfully-present immigrants can buy Marketplace plans but typically wait five years for Medicaid/Medicare. Care is costly without insurance.
- There is no universal system; most people are covered through an employer plan or buy coverage on the ACA Marketplace (HealthCare.gov).
- Medicare covers people aged 65+ (and some with disabilities); Medicaid covers low-income residents (rules vary by state).
- Foreign nationals usually need employer or private insurance; lawfully-present immigrants can use the Marketplace but often wait five years for Medicaid/Medicare.
- Out-of-pocket costs are high without coverage — confirm what your plan covers before treatment.
- 1
Establish which route covers you
There is no universal system. Work out whether you will be covered by an employer plan, a Marketplace plan, Medicare or Medicaid before you need care.
- 2
Check the employer plan first if you have one
Employer coverage is the most common route. Check what the plan covers, the deductible and the network before assuming a doctor or hospital is included.
- 3
Use HealthCare.gov if you buy your own
The ACA Marketplace at HealthCare.gov is the official place to buy individual coverage. Lawfully-present immigrants can buy Marketplace plans.
- 4
Plan around the five-year bar
Lawfully-present immigrants often wait five years before qualifying for Medicaid or Medicare. Marketplace or private cover has to bridge that period.
- 5
Confirm coverage before treatment
Out-of-pocket costs are high without coverage, and even insured care can leave large bills if the provider is out of network. Confirm what your plan covers before treatment.
- Coverage route identified (employer / Marketplace / Medicare / Medicaid)
- Employer plan details, deductible and network checked
- Marketplace eligibility checked on HealthCare.gov
- Five-year bar factored into the coverage plan
- State Medicaid rules checked if potentially eligible
- Network status of your doctor or hospital confirmed
- Coverage confirmed before any planned treatment
- HealthCare.gov (Health Insurance Marketplace)
Official federal marketplace to compare and buy coverage.
- Medicare (CMS)
Official federal health insurance for people 65+.
Frequently asked questions
Can immigrants get Medicaid or Medicare in the US?
Lawfully-present immigrants can buy plans on the ACA Marketplace, but typically wait five years before qualifying for Medicaid or Medicare. That five-year gap has to be bridged with Marketplace or private cover, so plan for it rather than discovering it later.
Where do I buy health insurance if I have no employer plan?
The ACA Marketplace at HealthCare.gov is the official channel for individual coverage. Lawfully-present immigrants can buy there too, and it is the route that bridges the wait for Medicaid or Medicare.
Why can insured patients still get large bills?
Because coverage depends on what your plan includes, the deductible, and whether the provider is in your network. Confirm all three before treatment — being insured is not the same as being covered for a specific doctor or hospital.
Government portals
- The White House — Official residence and office of the US President — executive orders, policy briefings, press releases
- U.S. Department of State — US passport and visa services, travel warnings, embassy information worldwide
- Internal Revenue Service (IRS) — Federal tax filing, refund status, ITIN/EIN applications, and Free File program
- USCIS — Green card, H-1B and work visas, naturalization, immigration benefits, and case status