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Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

Isenberg and Associates

Clinical Social Worker in Naperville, IL · enumerated 2006 · authorized official Jeffrey Larson, Owner.

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

National Provider Identifier

1699749416

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Registry record

Entity type Organization (Type 2)
Legal business name Isenberg and Associates
Parent organization Dunham Counseling
Practice address 236 S Washington St, Suite 200, Naperville, IL, 60540
Phone (630) 355-8410
Fax (630) 355-8412
Enumeration date Feb 16, 2006
Last updated in NPPES Oct 21, 2008

Taxonomy & classification

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 149000660 (IL) Primary

Authorized official

Name Jeffrey Larson
Title Owner
Phone (630) 355-8410

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

Where is Isenberg and Associates located?
The practice location on file with NPPES is in Naperville, IL.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-10-21. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-10-21.