Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Hayden Grace Koukios, AU.D
Audiologist in Milwaukee, WI · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1770077174
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Registry record
Entity type Individual (Type 1)
Name Dr. Hayden Grace Koukios
Credential AU.D
Sex Female
Practice address 9000 W. Wisconsin Avenue Ste B340, Milwaukee, WI, 53226
Phone (414) 266-2934
Fax (414) 266-6189
Enumeration date Jun 19, 2018
Last updated in NPPES Jan 7, 2025
Taxonomy & licenses
231H00000X Audiologist Speech, Language and Hearing Service Providers · License 665-156 (WI) Primary
AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders.
About the AUD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 1770077174 | Medicaid | WI | - |
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 Hayden Koukios?
The National Provider Identifier (NPI) for Hayden Koukios is 1770077174, a Type 1 (individual) record in the CMS NPPES registry.
Where does Hayden Koukios practice?
The practice location on file with NPPES is in Milwaukee, WI. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-01-07.