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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Kelly Derr, LCSW

Clinical Social Worker in Mokena, IL · enumerated 2019 · practices at Great Changes Counseling Services, P.C..

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

National Provider Identifier

1912468927

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Registry record

Entity type Individual (Type 1)
Name Ms. Kelly Derr
Credential LCSW
Sex Female
Practice address Mokena, IL, 60448
Phone (708) 995-7226
Enumeration date Mar 31, 2019
Last updated in NPPES Mar 31, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 149016583 (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.

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Frequently asked questions

Where does Kelly Derr practice?
The practice location on file with NPPES is in Mokena, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Kelly Derr?
The National Provider Identifier (NPI) for Kelly Derr is 1912468927, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-31.