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

Marc Harold Willis, MD

Individual provider Diagnostic Radiology Physician · NPI 1255494969

Marc Harold Willis, MD is a Diagnostic Radiology in Stanford, California. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 1998, 28 years ago. Practices with Stanford Health Care, a 3,085-clinician group and accepts Medicare assignment. Licensed in California and Texas.

Years since qualifying
28
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
CA, TX
In the registry since
2006
Specialties on file
2
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

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 20A17737 (CA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence L4809 (TX)

Record details

NPI number1255494969
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 18, 2006
Last updated in NPPESApril 5, 2024
Certification dateApril 5, 2024
Mailing address300 Pasteur Dr, Stanford, CA 94305-2200

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 1998 (28 years in practice)
Group practice Stanford Health Care — 3085 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

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