Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kristin R. Hallstrom, AU.D.

Audiologist in San Francisco, CA · enumerated 2008.

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

National Provider Identifier

1679759161

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Registry record

Entity type Individual (Type 1)

Name Kristin R. Hallstrom

Credential AU.D.

Sex Female

Practice address 155 5th St, University of the Pacific, San Francisco, CA, 94103

Phone (415) 929-6405

Enumeration date Jan 14, 2008

Last updated in NPPES Jan 3, 2022

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AU2376 (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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Kristin Hallstrom?

Kristin Hallstrom is registered in NPPES with the primary taxonomy of Audiologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-03.