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

James Y Greenberg, MD

Individual provider Internal Medicine Physician · NPI 1497859433

James Y Greenberg, MD is an Internal Medicine in San Francisco, California. Qualified in 1981, 45 years ago. Accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
45
Licensed in
CA
In the registry since
2006
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

2299 Post St Ste 205
San Francisco, CA 94115-3441
Phone: (415) 474-7955
Fax: (415) 292-0718
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A55519 (CA)

Record details

NPI number1497859433
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 11, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1981 (45 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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