Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregory B. Smith, M.D.

Hematology & Oncology Physician in St. Helena, CA · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1265408447

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Registry record

Entity type Individual (Type 1)

Name Gregory B. Smith

Credential M.D.

Sex Male

Practice address 6 Woodland Rd., Suite 304, St. Helena, CA, 94574

Phone (707) 967-5721

Enumeration date Feb 27, 2006

Last updated in NPPES Jan 16, 2008

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License G49485 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Gregory Smith practice?

The practice location on file with NPPES is in St. Helena, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Gregory Smith?

The National Provider Identifier (NPI) for Gregory Smith is 1265408447, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-01-16.