Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Allison Sue Walz, O.D.
Optometrist in Naperville, IL · enumerated 2009.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659503159
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Registry record
Entity type Individual (Type 1)
Name Dr. Allison Sue Walz
Credential O.D.
Sex Female
Practice address 1000 E Ogden Ave, Naperville, IL, 60563
Phone (630) 355-9080
Enumeration date Aug 17, 2009
Last updated in NPPES Mar 25, 2015
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
Where does Allison Walz practice?
The practice location on file with NPPES is in Naperville, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Allison Walz?
The National Provider Identifier (NPI) for Allison Walz is 1659503159, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-03-25.