Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Brook Clinic Associates, P.C.

Q: What type of organization is Brook Clinic Associates, P.C.?

Brook Clinic Associates, P.C. is registered in NPPES as a Clinical Psychologist (its primary provider taxonomy).

Clinical Psychologist in Oak Brook, IL · enumerated 2006 · authorized official Gerald Stein, President.

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

National Provider Identifier

1811065121

Verified

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Registry record

Entity type Organization (Type 2)

Legal business name Brook Clinic Associates, P.C.

Practice address 210 W 22nd St, Suite 118, Oak Brook, IL, 60523

Phone (630) 571-1077

Enumeration date Dec 4, 2006

Last updated in NPPES Nov 13, 2008

Taxonomy & classification

103G00000X Clinical Neuropsychologist Behavioral Health & Social Service Providers · License 071-001939 (IL) Secondary

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 071-001939 (IL) Primary

103TH0100X Health Service Psychologist Behavioral Health & Social Service Providers · License 071-001939 (IL) Secondary

Authorized official

Name Gerald Stein

Title President

Phone (630) 571-1077

Other identifiers

Identifier	Type	State	Issuer
071-001939	Other	IL	PSYCHOLOGIST REGISTRATION
022-72048-74	Other	IL	BLUE CROSS/BLUE SHIELD

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.

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Frequently asked questions

What type of organization is Brook Clinic Associates, P.C.?

Brook Clinic Associates, P.C. is registered in NPPES as a Clinical Psychologist (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.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-13.