Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Hammer Mental Health, Inc.

Clinical Psychologist in West Chicago, IL · enumerated 2017 · authorized official Janelle Hammer, Clinical Psychologist.

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

National Provider Identifier

1629590203

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Registry record

Entity type Organization (Type 2)

Legal business name Hammer Mental Health, Inc.

Practice address 148 W Washington St Ste A, West Chicago, IL, 60185

Phone (630) 415-6215

Enumeration date Jul 14, 2017

Last updated in NPPES Jul 14, 2017

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 071.008559 (IL) Primary

Authorized official

Name Janelle Hammer

Title Clinical Psychologist

Phone (630) 415-6215

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 2017-07-14. Verify at npiregistry.cms.hhs.gov.

Where is Hammer Mental Health, Inc. located?

The practice location on file with NPPES is in West Chicago, IL.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-07-14.