Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mary Schlegel, AU.D.
Audiologist in Naperville, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1417989336
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Registry record
Entity type Individual (Type 1)
Name Mary Schlegel
Credential AU.D.
Sex Female
Practice address 808 Rickert Dr Ste 200, Naperville, IL, 60540
Phone (630) 364-7410
Fax (630) 718-2655
Enumeration date Jul 7, 2006
Last updated in NPPES Jul 25, 2023
Taxonomy & licenses
231H00000X Audiologist Speech, Language and Hearing Service Providers · License 147000816 (IL) Primary
AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders.
About the AUD 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 Mary Schlegel?
The National Provider Identifier (NPI) for Mary Schlegel is 1417989336, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Schlegel 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 2023-07-25.