Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Datuin, AU.D.

Audiologist in Mission Viejo, CA · enumerated 2020 · practices at South Bay Hearing & Balance Center.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1669081469

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Registry record

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 (949) 855-7898

Enumeration date Jul 28, 2020

Last updated in NPPES Jul 31, 2020

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AU3353 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1669081469 active?

Yes, as of the latest NPPES snapshot, NPI 1669081469 is active (record last updated 2020-07-31).

How do I verify Mark Datuin's NPI record?

Cross-check NPI 1669081469 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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South Bay Hearing & Balance Center Audiologist-Hearing Aid Fitter · Mission Viejo, CA NPI 1780022624

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-31.