Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

James Lewis Zehnder, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1669508826

James Lewis Zehnder, MD is a Pathology in Stanford, California. Graduated from Tufts University School of Medicine in 1984, 42 years ago. Practices with Stanford Health Care, a 3,085-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
42
Trained at
Tufts University School of Medicine
Licensed in
CA
In the registry since
2007
Specialties on file
4
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

300 Pasteur Dr
Stanford, CA 94305-2200
Phone: (650) 723-4000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology Physician (primary) Taxonomy 207ZP0101X · Licence G56192 (CA)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence G56192 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence G56192 (CA)
Anatomic Pathology & Clinical Pathology Physician Taxonomy 207ZP0102X · Licence G55192 (CA)

Record details

NPI number1669508826
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 24, 2007
Last updated in NPPESMarch 13, 2024
Certification dateMarch 13, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPATHOLOGY
Also practisesHEMATOLOGY
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Stanford Health Care — 3085 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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