Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

International Consulting Group, Inc.

Early Intervention Provider Agency in Chicago, IL · enumerated 2007 · authorized official Iwona Korzeniowska, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1942346325

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Registry record

Entity type Organization (Type 2)

Legal business name International Consulting Group, Inc.

Other name <Unavail>

Practice address 1467 N Elston Ave Ste 103, Chicago, IL, 60642

Phone (312) 943-3600

Fax (312) 943-3096

Enumeration date Jan 30, 2007

Last updated in NPPES Apr 18, 2024

Taxonomy & classification

101YP2500X Professional Counselor Behavioral Health & Social Service Providers Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Secondary

171R00000X Interpreter Other Service Providers · License 1010149 (IL) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

2080P0006X Developmental - Behavioral Pediatrics Physician Allopathic & Osteopathic Physicians Secondary

222Q00000X Developmental Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

225200000X Physical Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

225X00000X Occupational Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers Secondary

2355S0801X Speech-Language Assistant Speech, Language and Hearing Service Providers Secondary

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 1010149 (IL) Secondary

251E00000X Home Health Agency Agencies · License 1010149 (IL) Secondary

252Y00000X Early Intervention Provider Agency Agencies · License 1010149 (IL) Primary

Authorized official

Name Iwona Korzeniowska

Title President

Phone (312) 943-3600

Other identifiers

Identifier	Type	State	Issuer
103034	Medicaid	IL	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What type of organization is International Consulting Group, Inc.?

International Consulting Group, Inc. is registered in NPPES as a Early Intervention Provider Agency (its primary provider taxonomy).

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-04-18.