Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Lydia Q Xiong, AU.D.
Audiologist in Madison, WI · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669046165
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Registry record
Entity type Individual (Type 1)
Name Dr. Lydia Q Xiong
Credential AU.D.
Sex Female
Practice address 600 Highland Ave, Madison, WI, 53792
Phone (608) 262-3147
Enumeration date May 18, 2021
Last updated in NPPES Oct 25, 2022
Taxonomy & licenses
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
Where does Lydia Xiong practice?
The practice location on file with NPPES is in Madison, WI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Lydia Xiong?
The National Provider Identifier (NPI) for Lydia Xiong is 1669046165, 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 2022-10-25.