State provider hub
Illinois NPI Registry - Provider Lookup
Look up NPI numbers for healthcare providers in Illinois, searchable by name, specialty, and city, drawn from the public CMS NPPES data file.
315,801
providers & organizations
Advertisement
Top specialties in Illinois
Counselor 28,562 Social Worker 22,133 Nurse Practitioner 18,193 Internal Medicine 16,860 Dentist 16,069 Physical Therapist 14,202 Clinic/Center 12,107 Speech-Language Pathologist 10,925 Pharmacist 10,773 Behavior Technician 9,158 Family Medicine 8,444 Chiropractor 8,251 Psychologist 7,804 Occupational Therapist 7,237 Student in an Organized Health Care Education/Training Program 6,693 Physician Assistant 6,269 Pediatrics 5,009 Psychiatry & Neurology 4,710 Registered Nurse 4,580 Optometrist 4,209 Emergency Medicine 3,834 Behavior Analyst 3,471 Pharmacy 3,354 Anesthesiology 3,353 Dietitian, Registered 3,246 Obstetrics & Gynecology 3,217 Radiology 3,075 Durable Medical Equipment & Medical Supplies 2,925 Developmental Therapist 2,872 Physical Therapy Assistant 2,690
Browse by city
Chicago, IL 80,081 Naperville, IL 6,119 Springfield, IL 5,881 Peoria, IL 5,486 Rockford, IL 4,950 Evanston, IL 4,817 Aurora, IL 4,121 Arlington Heights, IL 3,493 Oak Lawn, IL 3,483 Park Ridge, IL 3,094 Skokie, IL 3,077 Glenview, IL 3,056 Oak Park, IL 2,992 Elgin, IL 2,984 Champaign, IL 2,960 Wheaton, IL 2,893 Joliet, IL 2,851 Northbrook, IL 2,820 Maywood, IL 2,677 Schaumburg, IL 2,614 Orland Park, IL 2,599 Downers Grove, IL 2,433 Bloomington, IL 2,387 Mchenry, IL 2,061 Elmhurst, IL 1,977 Urbana, IL 1,942 Belleville, IL 1,912 Decatur, IL 1,893 Crystal Lake, IL 1,888 Lombard, IL 1,803 Libertyville, IL 1,779 Des Plaines, IL 1,773 Hoffman Estates, IL 1,754 Hinsdale, IL 1,671 Waukegan, IL 1,646 Plainfield, IL 1,644 Quincy, IL 1,634 Tinley Park, IL 1,627 Marion, IL 1,432 St Charles, IL 1,379
Frequently asked questions
How do I look up an NPI number in Illinois?
Use the NPI search and select IL, or browse the specialty and city directories on this page. Every provider profile shows the NPI, taxonomy, practice address, and status.
How many healthcare providers are registered in Illinois?
Our latest NPPES snapshot lists 315,801 active providers and organizations with a practice location in Illinois.
Is this the official Illinois NPI registry?
No, NPI numbers are issued federally by CMS, not by states. This is a private directory built on the public CMS NPPES data file; the official registry is npiregistry.cms.hhs.gov.
Source: CMS NPPES (public data). Snapshot 2026-07-13.