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Healthcare Providers & Facilities in Illinois

Comprehensive public directory of 243,505 individual practitioners and 73,722 medical facilities in Illinois.

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243,505 Practitioners
73,722 Facilities
1,083 Cities

Select a City in Illinois

Cities with a full directory, largest first; the A–Z list below also includes cities with at least one listed practitioner.

More Cities in Illinois (A–Z, 189)

Includes the 80 largest of 917 smaller cities with at least one listed practitioner.

How Illinois compares with the U.S.

Compared with the U.S. as a whole, Illinois has more clinicians in Naprapath (15.1x), Developmental Therapists (4.4x) and clinicians in Specialist/Technologist - Rehabilitation, Blind (4.2x) per 100,000 residents.

It has fewer Licensed Vocational Nurses (2% of the U.S. rate), clinicians in Technician - Personal Care Attendant (2%) and clinicians in Home Health Aide (8%) per 100,000 residents.

Illinois has 1,918 active clinicians per 100,000 residents, compared with 2,198 for the U.S.

What these numbers mean

Clinicians per 100,000 residents compares places of different sizes. We count active clinicians who list a practice address in the area in the federal NPI registry (NPPES) and divide by the number of people who live there, according to the U.S. Census Bureau. The U.S. rate is the same calculation for the whole country.

A higher number does not mean it is easier to get an appointment, that wait times are shorter, or that care is better. It also does not show how many clinicians are accepting new patients or which insurance plans they take. A lower number does not by itself mean there is a shortage.

92% of clinicians in Illinois listed in the CMS Medicare file (58,522 of 63,749) accept Medicare assignment. That is similar to the U.S. share of 92%.

Only 63,749 of 243,505 active clinicians in Illinois appear in the CMS Medicare file, so this share describes that smaller group.

What is Medicare assignment?

A clinician who accepts Medicare assignment agrees to take the Medicare-approved amount as full payment for services that Original Medicare covers. You usually still pay your deductible and coinsurance. This comes from the CMS Doctors and Clinicians file and applies to Original Medicare only. Medicare Advantage plans have their own provider networks. It does not show whether a clinician is taking new patients.

Some clinicians are listed as "may accept assignment," which means they can decide case by case. Clinicians without an assignment flag, or who are not in the CMS file, are not counted as accepting assignment. That does not mean they refuse Medicare. Ask the office before your visit.

20% of clinicians in Illinois listed in the CMS Medicare file (13,018 of 63,749) have a CMS telehealth indicator, meaning their recent Medicare claims include telehealth services. That is similar to the U.S. share of 21%.

About the telehealth indicator

The telehealth indicator comes from CMS. It marks clinicians whose recent paid Medicare claims include services delivered by telehealth. It means a clinician has provided some services by telehealth, not that every visit can be done online. A clinician without the indicator may still offer telehealth, for example to patients who are not on Medicare. Ask the office which visits can be done by video or phone.

These figures summarize public federal data. They do not measure quality of care, appointment availability, or whether a clinician accepts your insurance or new patients. Registry addresses can be out of date. Please confirm details directly with the office and your plan. This information is not medical advice.

Prepared by T-MedInfo from NPPES, CMS and U.S. Census Bureau data. Questions or corrections: support@true-medinfo.com · Methodology

Sources: Clinician counts and practice addresses: NPPES NPI Registry, Centers for Medicare & Medicaid Services (CMS), data as of August 2026. Medicare assignment and telehealth indicators: CMS Doctors and Clinicians National Downloadable File. Population: U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates, Table B01003 (Total Population).

Illinois CMS Healthcare & Financial Disclosures

CMS Part D Prescribers (2024), Open Payments (program year 2025), Medicare (PECOS) enrollment and Part B (2024) data

Source: CMS public datasets

In Illinois, the NPPES registry lists 243,505 individual practitioners and 73,722 organizations.

In the CMS Part D Prescribers data for 2024, statewide total drug cost is $7,431.8 Million across 51,195,006 claims. 97,650 practitioners have a Medicare (PECOS) enrollment record. Open Payments data for program year 2025 list $117.2 Million in payments reported by companies to 38,219 practitioners; a reported payment does not necessarily mean the financial relationship is improper.

Medicare Part D Prescriptions (2024) $7,431.8M 51,195,006 Prescription Claims Source: data.cms.gov
Open Payments Sunshine Act (2025) $117.2M 38,219 Recipients Disclosed A reported payment does not necessarily mean the financial relationship is improper. Source: openpaymentsdata.cms.gov
Medicare (PECOS) Enrollment 97,650 Enrolled Medicare Practitioners Source: data.cms.gov
Medicare Part B Allowed Volume (2024) $4,900.0M 109,864,730 Services Performed Source: data.cms.gov

CMS PECOS: Eligible to Order or Refer for Medicare in Illinois

Part B Lab & Imaging Eligible: 74,627
Durable Medical Equipment (DME): 78,303
Home Health Agency (HHA): 65,014
Source: CMS Order and Referring

Public profiles in Illinois

Directory navigation, in NPI number order.

Individual practitioners

Organizations