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

Gregory B. Smith, MD

Individual provider Hematology & Oncology Physician · NPI 1265408447

Gregory B. Smith, MD is a Hematology & Oncology Physician in St Helena, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

6 Woodland Rd Ste 304
St Helena, CA 94574-9501
Phone: (707) 967-5721
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence G49485 (CA)

Record details

NPI number1265408447
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 27, 2006
Last updated in NPPESJanuary 16, 2008