Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Katje Windel, OD
Optometrist in Naperville, IL · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1811667546
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Registry record
Entity type Individual (Type 1)
Name Katje Windel
Credential OD
Sex Female
Practice address 232 S Washington St, Naperville, IL, 60540
Phone (630) 369-3937
Enumeration date Sep 14, 2021
Last updated in NPPES Sep 14, 2021
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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.
Frequently asked questions
What is the NPI number for Katje Windel?
The National Provider Identifier (NPI) for Katje Windel is 1811667546, a Type 1 (individual) record in the CMS NPPES registry.
Where does Katje Windel practice?
The practice location on file with NPPES is in Naperville, IL. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-14.