Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jennifer Claussen, LCSW

Social Worker in Oak Brook, IL · enumerated 2008.

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

National Provider Identifier

1053563809

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Jennifer Claussen

Credential LCSW

Sex Female

Practice address 2907 Butterfield Rd, Suite 240, Oak Brook, IL, 60523

Phone (630) 586-0900

Fax (630) 586-9990

Enumeration date Oct 10, 2008

Last updated in NPPES Oct 10, 2008

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 149-012949 (IL) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Jennifer Claussen?

Jennifer Claussen is registered in NPPES with the primary taxonomy of Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

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