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

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1295873685

Dr. Michael S. Greenfield, MD is an Endocrinology in Mountain View, California. Graduated from Harvard Medical School in 1974, 52 years ago. Practices as a sole proprietor and offers telehealth. Licensed in California.

Years since qualifying
52
Trained at
Harvard Medical School
Licensed in
CA
In the registry since
2007
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

2500 Hospital Dr Bldg 14
Mountain View, CA 94040-4106
Phone: (650) 965-7500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence G35253 (CA)

Record details

NPI number1295873685
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 1, 2007
Last updated in NPPESJuly 8, 2007
Mailing address2500 Hospital Dr, Building 14, Mountain View, CA 94040-4106

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1974 (52 years in practice)
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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