Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Mack E. Winn and Associates Inc.

Case Management Agency in Lake Bluff, IL · enumerated 2006 · authorized official Mack Winn, Owner/ President.

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

National Provider Identifier

1235234329

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Registry record

Entity type Organization (Type 2)

Legal business name Mack E. Winn and Associates Inc.

Practice address 11 N Skokie Hwy Ste 111, Lake Bluff, IL, 60044

Phone (847) 604-9451

Fax (847) 604-9457

Enumeration date Sep 13, 2006

Last updated in NPPES Aug 13, 2008

Taxonomy & classification

251B00000X Case Management Agency Agencies · License 149003400 (IL) Primary

Authorized official

Name Mack Winn

Title Owner/ President

Phone (847) 604-9451

Other identifiers

Identifier	Type	State	Issuer
149003400	Other	IL	SOCIAL WORK LICENSE

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

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-08-13. Verify at npiregistry.cms.hhs.gov.

Where is Mack E. Winn and Associates Inc. located?

The practice location on file with NPPES is in Lake Bluff, IL.

Providers at this address

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Mack Winn Clinical Social Worker · Lake Bluff, IL NPI 1912002700

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-08-13.