Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jacquelyn Kemmer Callander

Otolaryngology Physician in Palo Alto, CA · enumerated 2020.

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

National Provider Identifier

1851929129

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Registry record

Entity type Individual (Type 1)

Name Jacquelyn Kemmer Callander

Sex Female

Practice address 300 Pasteur Dr, Palo Alto, CA, 94305

Phone (650) 723-4000

Enumeration date Mar 31, 2020

Last updated in NPPES Jul 16, 2025

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License A190358 (CA) 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

Where does Jacquelyn Callander practice?

The practice location on file with NPPES is in Palo Alto, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Jacquelyn Callander?

The National Provider Identifier (NPI) for Jacquelyn Callander is 1851929129, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-16.