NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katherine Janet Denny

Speech-Language Pathologist in St Charles, IL · enumerated 2007.

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

National Provider Identifier

1669670808

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Katherine Janet Denny
Sex Female
Practice address 3815 E Main St Ste B, St Charles, IL, 60174
Phone (630) 584-7530
Enumeration date Jul 10, 2007
Last updated in NPPES Jan 29, 2025

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 146007398 (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

How do I verify Katherine Denny's NPI record?
Cross-check NPI 1669670808 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1669670808 active?
Yes, as of the latest NPPES snapshot, NPI 1669670808 is active (record last updated 2025-01-29).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-29.