Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Cornell Companies

Q: What type of organization is Cornell Companies?

Cornell Companies is registered in NPPES as a Substance Abuse Rehabilitation Facility (its primary provider taxonomy).

Substance Abuse Rehabilitation Facility in Willowbrook, IL · enumerated 2007 · authorized official Jeff Reavy, Sr Business Mgr.

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

National Provider Identifier

1336294958

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Registry record

Entity type Organization (Type 2)

Legal business name Cornell Companies

Practice address 11s250 Kingery Hwy, Willowbrook, IL, 60527

Phone (630) 325-5050

Enumeration date Jan 24, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

324500000X Substance Abuse Rehabilitation Facility Residential Treatment Facilities · License A-8981-0012-A (IL) Primary

Authorized official

Name Jeff Reavy

Title Sr Business Mgr

Phone (630) 824-4547

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 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.

What type of organization is Cornell Companies?

Cornell Companies is registered in NPPES as a Substance Abuse Rehabilitation Facility (its primary provider taxonomy).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-22.