Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Barbara A Lewallen, AUD
Audiologist in Elmhurst, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447291794
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Registry record
Entity type Individual (Type 1)
Name Barbara A Lewallen
Credential AUD
Sex Female
Practice address 1200 S. York Rd, Elmhurst, IL, 60126
Phone (630) 941-2603
Fax (630) 758-8494
Enumeration date Jun 9, 2006
Last updated in NPPES Apr 13, 2011
Taxonomy & licenses
237600000X Audiologist-Hearing Aid Fitter Speech, Language and Hearing Service Providers · License 147000216 (IL) Secondary
231H00000X Audiologist Speech, Language and Hearing Service Providers · License 147,00216 (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 specialty is Barbara Lewallen?
Barbara Lewallen is registered in NPPES with the primary taxonomy of Audiologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-13.