Dr. William Stewart Speer, AU.D.
Dr. William Stewart Speer is a Audiologist provider (Audiologist) practicing in Eureka, CA, registered in the NPPES registry with NPI 1164835534 since 2014. The credential AUD stands for Doctor of Audiology. Practices at T.F. Vert DDS.P.C. (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1164835534 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. William Stewart Speer |
| Credential | AU.D. |
| Sex | Male |
| Practice address | 831 HARRIS ST, SUITE D, Eureka, CA, 95503 |
| Phone | 7074437111 |
| Fax | 7074437117 |
| Enumeration date | 2014-06-03 |
| Last updated in NPPES | 2014-06-03 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 231H00000X | Audiologist | Primary | — | — |
AUD — Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD credential
Copy-ready billing details
Provider: William Speer, AU.D. NPI: 1164835534 Taxonomy: 231H00000X (Audiologist) Address: 831 HARRIS ST, SUITE D, Eureka, CA, 95503
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1215931118 | Thomas Vert | Individual | General Practice Dentistry | Eureka, CA |
| 1427002385 | Mark Harris | Individual | General Practice Dentistry | Eureka, CA |
| 1144241373 | T.F. Vert DDS.P.C. | Organization | General Practice Dentistry | Eureka, CA |
| 1497865554 | Roger Miller | Individual | General Practice Dentistry | Eureka, CA |
| 1013185990 | Jason Wolven | Individual | General Practice Dentistry | Eureka, CA |
Verify this record
Cross-check NPI 1164835534 against the authoritative CMS record: view Dr. William Stewart Speer on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
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Where does William Speer practice?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-06-03.