Dr. Mark Datuin, AU.D.
Dr. Mark Datuin is a Audiologist provider (Audiologist) practicing in Mission Viejo, CA, registered in the NPPES registry with NPI 1669081469 since 2020. The credential AUD stands for Doctor of Audiology. Practices at South Bay Hearing & Balance Center (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1669081469 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Mark Datuin |
| Credential | AU.D. |
| Sex | Male |
| Practice address | 26302 LA PAZ RD STE 107, Mission Viejo, CA, 92691 |
| Phone | 9498557898 |
| Enumeration date | 2020-07-28 |
| Last updated in NPPES | 2020-07-31 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 231H00000X | Audiologist | Primary | AU3353 | CA |
AUD — Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD credential
Copy-ready billing details
Provider: Mark Datuin, AU.D. NPI: 1669081469 Taxonomy: 231H00000X (Audiologist) Address: 26302 LA PAZ RD STE 107, Mission Viejo, CA, 92691
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1780022624 | South Bay Hearing & Balance Center | Organization | Audiologist-Hearing Aid Fitter | Mission Viejo, CA |
Verify this record
Cross-check NPI 1669081469 against the authoritative CMS record: view Dr. Mark Datuin 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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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2020-07-31.