Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Jeffrey Hersey

Specialist in Redwood City, CA · enumerated 2007.

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

National Provider Identifier

1922299635

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Registry record

Entity type Individual (Type 1)

Name Mr. Jeffrey Hersey

Sex Male

Practice address 541 Jefferson Ave, #202, Redwood City, CA, 94063

Phone (650) 817-9070

Fax (650) 817-9074

Enumeration date Aug 7, 2007

Last updated in NPPES Aug 7, 2007

Taxonomy & licenses

174400000X Specialist Other Service Providers 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

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 Jeffrey Hersey?

Jeffrey Hersey is registered in NPPES with the primary taxonomy of Specialist. 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 2007-08-07.