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 enrollment & OIG LEIE status Weekly updates

Data from NPPES (CMS) · PECOS enrollment & OIG LEIE status · Weekly 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 · September 2026 · #6 nationally

331,714Total providers

244,871Individuals · 74%

86,843Organizations · 26%

105,122PECOS-enrolled · 32%

Screened against the OIG LEIE exclusion list — 223 Illinois providers currently flagged.

Individual providers by gender

Female 169,235 (69%) Male 75,636 (31%)

Top cities

Chicago107,159

Naperville8,061

Mount Vernon7,778

Rockford7,736

Evanston7,258

Maywood4,866

Oak Lawn4,850

Arlington Heights4,517

Top specialties

Clin Social Worker18,137

Physical Therapist16,235

MH Counselor14,824

DME & Medical Supplies14,633

Internal Medicine14,318

Prof. Counselor13,446

Community/Retail Pharmacy12,510

Speech-Language Pathologist12,263

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. Provider data is refreshed weekly from CMS; LEIE exclusion data monthly from OIG.

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.

Looking for providers outside Illinois? The NPI Lookup covers every US provider, with the same PECOS and LEIE detail.

Search Illinois Providers → Browse by Specialty → ← All States