Provider networks in Illinois.
InPlan holds provider listings for 40 Medicare Advantage plans that serve Illinois. Ask whether a plan lists a provider and get the answer with its source type and the date we read the directory.
- MEDICARE ADVANTAGE PLANS
- 40
- PLAN YEARS
- 2027
- INSURERS AND PLAN ORGANIZATIONS
- 5
- LATEST READ
- 2026-10-29
What we hold in Illinois.
Plans whose provider directories list providers in our data.
| MARKET | PLANS | INSURERS | PLAN YEARS | LATEST READ |
|---|---|---|---|---|
| Medicare Advantage | 40 | 5 | 2027 | 2026-10-29 |
How we count: a plan counts when its provider directory lists at least one provider in our data. A provider-plan link is one listing of one provider in one plan. For marketplace plans it counts each plan year and network tier the directory gives; for Medicare Advantage plans it counts each provider once per plan.
Insurers in Illinois.
Plans with provider listings for each insurer or plan organization, as they publish their names. A Medicare Advantage plan counts in every state it serves.
| INSURER | MARKET | PLANS |
|---|---|---|
| Devoted Health | Medicare Advantage | 24 |
| Zing Health | Medicare Advantage | 7 |
| HealthSpring | Medicare Advantage | 6 |
| Blue Cross and Blue Shield of IL, NM | Medicare Advantage | 2 |
| Molina Healthcare | Medicare Advantage | 1 |
Who the Medicare Advantage directories list.
More than 82,000 providers who practise in Illinois appear in the Medicare Advantage plans we hold. The most common primary specialties among them:
- Nurse Practitioner12,868
- Clinical Social Worker5,212
- Physician Assistant4,853
- Internal Medicine4,537
- Family Practice4,495
- Mental Health Counselor4,377
- Dentist4,046
- Physical Therapist in Private Practice3,268
Specialties as the national provider registries record them. A provider counts once per specialty.
Example plans in Illinois.
Plans with the most provider-plan links, with the plan ID the API takes. Look any plan ID up for free with the plan ID lookup.
| PLAN | PLAN ID | YEAR | TYPE | PROVIDER-PLAN LINKS |
|---|---|---|---|---|
| HealthSpring True Choice (PPO)HealthSpring | H7849-156-000 | 2027 | Medicare AdvantagePPO | 374,040 |
| HealthSpring True Choice (PPO)HealthSpring | H7849-002-000 | 2027 | Medicare AdvantagePPO | 373,995 |
| HealthSpring Premier (HMO-POS)HealthSpring | H4513-084-000 | 2027 | Medicare AdvantageHMO-POS | 130,601 |
| HealthSpring Preferred (HMO)HealthSpring | H4513-085-000 | 2027 | Medicare AdvantageHMO | 130,601 |
| Zing Select Diabetes & Heart IL (HMO C-SNP)Zing Health | H4624-010-000 | 2027 | Medicare AdvantageHMO C-SNP · Special Needs Plan | 107,214 |
A real Illinois answer.
Philip E. Fidel, DDS, who practises in Chicago, is listed in H7849-156-000. This is the answer the API gives today for that pair, with its source type and the date we read the listing.
curl -H "Authorization: Bearer $INPLAN_KEY" \ "https://api.inplan.io/v1/check?npi=1003008459&plan_id=H7849-156-000"
{
"npi": "1003008459",
"plan_id": "H7849-156-000",
"market": "ma",
"in_network": true,
"answer": "listed",
"plan_year": 2027,
"source": { "type": "plan_directory", "as_of": "2026-10-29" }
}Philip E. Fidel, DDS
Dentist · Chicago, IL
Listed
- PLAN
- HealthSpring True Choice (PPO)
- INSURER
- HealthSpring
- MARKET
- Medicare Advantage, plan year 2027
- PLAN TYPE
- PPO
- SOURCE
- plan_directory · read 2026-10-29
Every Illinois provider, with every plan that lists them.
The Illinois data file is one CSV: one row for each provider and plan pair, for every provider practising in Illinois, with the source type and read date on each row.
Check Illinois providers in your own product.
Send an NPI and a plan ID, get an answer with its evidence. Or ask for every plan that lists a provider. A free key gives 500 calls a month.
Other states
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Puerto Rico
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Figures counted 2026-10-30. Sources: provider directories published by insurers and plans; public plan and provider registries. InPlan is independent and not affiliated with any insurer named here.