Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sara Nicole O'Brien, M.A.

Audiologist in Waterloo, IA · enumerated 2012.

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

National Provider Identifier

1891039202

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Registry record

Entity type Individual (Type 1)

Name Sara Nicole O'Brien

Credential M.A.

Sex Female

Practice address 1753 W Ridgeway Ave, Suite 111, Waterloo, IA, 50701

Phone (319) 833-5970

Fax (319) 833-5971

Enumeration date Nov 26, 2012

Last updated in NPPES Dec 6, 2012

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 00565 (IA) Primary

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.

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Frequently asked questions

How do I verify Sara O'Brien's NPI record?

Cross-check NPI 1891039202 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1891039202 active?

Yes, as of the latest NPPES snapshot, NPI 1891039202 is active (record last updated 2012-12-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-06.