Before you start

Illinois residence
Income information for subsidy or Medicaid eligibility
An SSN or ITIN for marketplace applications
A qualifying life event, if enrolling outside the annual window

Step-by-step

1
Enrol in your employer's plan within the new-hire window
Typically 30 days from your start date. Compare the deductible and out-of-pocket maximum, not just the premium.
Via employerWho: YouFirst 30 days of employment
2
Without an employer plan, use Get Covered Illinois
Illinois transitioned from HealthCare.gov to its own state-based marketplace. Check current open-enrolment dates on the state site rather than assuming the federal calendar.
OnlineWho: You
3
Check Illinois Medicaid eligibility first
Illinois expanded Medicaid, covering adults up to 138% of the federal poverty level with no premium. Newcomers on modest early incomes frequently qualify and never check.
OnlineWho: You
4
Register with a primary care physician
Your PCP gates specialist access in most plans, and in Chicago finding one accepting new patients in-network can take weeks. Confirm network status with the practice directly — insurer directories are frequently out of date.
OnlineWho: You
5
Learn the urgent care versus emergency room distinction
An ER visit for something a clinic could treat can cost thousands even insured. Urgent care handles fractures, stitches and infections far more cheaply.
In personWho: You
6
Know Cook County Health exists
Cook County runs Stroger and Provident hospitals and a network of clinics, plus CountyCare, providing care regardless of ability to pay. It is one of the oldest public health systems in the United States and a genuine safety net.
In personWho: You

Documents you’ll need

Proof of Illinois residence
Income documentation for subsidies or Medicaid
SSN or ITIN
Immigration documents for marketplace eligibility categories
Evidence of losing prior coverage, if using a special enrolment period

Things most newcomers don’t know

Illinois covers some immigrants that federal programmes exclude.

Illinois created state-funded health coverage for older adults who meet income tests but are ineligible for federal Medicaid because of immigration status. Programme scope and enrolment have been adjusted repeatedly for budget reasons, so check current rules — but the principle is that Illinois goes further than federal law requires, which Texas and Florida do not.

Source: Illinois Department of Healthcare and Family Services

Illinois runs its own marketplace now, not HealthCare.gov.

The state transitioned to a state-based exchange, which means the enrolment site, the deadlines and the customer service are Illinois's rather than the federal government's. Guides written before the transition send you to the wrong place.

Source: Get Covered Illinois

The deductible is what will surprise you, not the premium.

US plans commonly require you to pay the first several thousand dollars of care yourself each year. Someone from a national health service reads 'I have insurance' as 'I am covered', then receives a $2,800 bill for a scan.

Source: community-reported

Losing job-based coverage opens a special enrolment window.

You do not have to wait for annual open enrolment if you lose employer coverage, move to Illinois, marry or have a child. Each triggers a limited special enrolment period, typically 60 days.

Source: HealthCare.gov — dates and deadlines