Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

James Lewis Zehnder, MD

Anatomic Pathology Physician in Stanford, CA · enumerated 2007.

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

National Provider Identifier

1669508826

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Registry record

Entity type Individual (Type 1)

Name James Lewis Zehnder

Credential MD

Sex Male

Practice address 300 Pasteur Dr, Stanford, CA, 94305

Phone (650) 723-4000

Enumeration date Feb 24, 2007

Last updated in NPPES Mar 13, 2024

Taxonomy & licenses

207RH0000X Hematology (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License G56192 (CA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License G56192 (CA) Secondary

207ZP0102X Anatomic Pathology & Clinical Pathology Physician Allopathic & Osteopathic Physicians · License G55192 (CA) Secondary

207ZP0101X Anatomic Pathology Physician Allopathic & Osteopathic Physicians · License G56192 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
00G561920	Medicaid	CA	-

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 James Zehnder's NPI record?

Cross-check NPI 1669508826 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669508826 active?

Yes, as of the latest NPPES snapshot, NPI 1669508826 is active (record last updated 2024-03-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-13.