Illinois NPI Lookup

Find Illinois healthcare providers by name or NPI number

Free NPI lookup for Illinois doctors, specialists, hospitals, and medical groups. Verify PECOS Medicare enrollment and LEIE exclusion status — no account required.

Try: NPI 1013968080 · John Adams · General Hospital

Illinois Providers Free · No account needed PECOS & LEIE verified Monthly updates

Data from NPPES (CMS) · PECOS & OIG LEIE verified · Monthly updates · No login required

New Illinois providers this month See who was newly enumerated in Illinois — updated weekly, free to explore. See new providers →

Illinois provider registry — at a glance

NPPES · June 2026 · #6 nationally

326,322Total providers

240,785Individuals · 74%

85,537Organizations · 26%

105,585PECOS-enrolled · 32%

Screened against the OIG LEIE exclusion list — 221 Illinois providers currently flagged.

Individual providers by gender

Female 165,799 (69%) Male 74,986 (31%)

Top cities

Chicago105,373

Naperville7,883

Rockford7,605

Evanston7,176

Quincy7,109

Oak Park4,925

Maywood4,916

Oak Lawn4,835

Top specialties

Clin Social Worker17,687

Physical Therapist16,014

DME & Medical Supplies14,485

MH Counselor14,466

Internal Medicine14,093

Prof. Counselor13,146

Community/Retail Pharmacy12,490

Pharmacy12,205

Browse Illinois Doctors by Specialty

Family Medicine 207Q00000X Internal Medicine 207R00000X Pediatrics 208000000X Obstetrics & Gynecology 207V00000X Orthopaedic Surgery 207X00000X Psychiatry 2084P0800X Nurse Practitioner 363L00000X Chiropractor 111N00000X Dentist 122300000X View all specialties →

NPI Lookup for Illinois Healthcare Providers

The NPI Lookup tool provides free access to all Illinois healthcare provider NPI records from the NPPES NPI Registry (CMS). Search by provider name, NPI number, PAC ID, or organization to find doctors, hospitals, clinics, and specialists licensed in Illinois.

Every Illinois provider record includes the 10-digit National Provider Identifier (NPI), primary taxonomy code (specialty), practice address, PECOS Medicare enrollment status, and OIG LEIE exclusion flag. Data is refreshed monthly from official CMS and OIG sources.

Find NPI Numbers for Illinois Providers

Use the search form above to look up individual providers (Type 1 NPI) such as physicians, nurse practitioners, and therapists, or organizations (Type 2 NPI) such as hospitals, clinics, and group practices in Illinois.

Search Illinois Providers → Browse by Specialty → ← All States

Monitor Illinois for new provider openings. Get notified when a new doctor, clinic, or specialist enters the NPPES registry in your territory → Provider Signals Growth — start free