Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Acorn Rehab Services Ltd

Q: What type of organization is Acorn Rehab Services Ltd?

Acorn Rehab Services Ltd is registered in NPPES as a Group Psychotherapy Psychologist (its primary provider taxonomy).

Group Psychotherapy Psychologist in Chicago, IL · enumerated 2007 · authorized official Frank Parker, Ceo.

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

National Provider Identifier

1982808655

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Registry record

Entity type Organization (Type 2)

Legal business name Acorn Rehab Services Ltd

Practice address 4639 W Washington Blvd, Chicago, IL, 60644

Phone (773) 287-1822

Enumeration date Jun 14, 2007

Last updated in NPPES Aug 22, 2020

Taxonomy & classification

103TP2701X Group Psychotherapy Psychologist Behavioral Health & Social Service Providers Primary

Authorized official

Name Frank Parker

Title Ceo

Phone (773) 287-1822

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 Acorn Rehab Services Ltd?

Acorn Rehab Services Ltd is registered in NPPES as a Group Psychotherapy 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.

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