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

Mrs. Leslie Ann Garthaus, M.S.,CCC-SLP-L

Speech-Language Pathologist in Bloomington, IL · enumerated 2007.

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

National Provider Identifier

1124211552

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Registry record

Entity type Individual (Type 1)

Name Mrs. Leslie Ann Garthaus

Credential M.S.,CCC-SLP-L

Sex Female

Practice address Bloomington, IL, 61704

Phone (309) 530-6982

Enumeration date Aug 20, 2007

Last updated in NPPES Mar 9, 2023

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

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 146009005 (IL) Primary

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

What is the NPI number for Leslie Garthaus?

The National Provider Identifier (NPI) for Leslie Garthaus is 1124211552, a Type 1 (individual) record in the CMS NPPES registry.

Where does Leslie Garthaus practice?

The practice location on file with NPPES is in Bloomington, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-09.