Gregory B. Smith, M.D.
Hematology & Oncology Physician · St Helena, CA
Gregory B. Smith, M.D. is a hematology & oncology physician with a practice address in St Helena, California, and NPI 1265408447, issued on Feb 27, 2006. Check the license (California G49485, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Gregory B. Smith
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- G49485 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6 Woodland RD., St Helena, CA 94574
- Phone
- (707) 967-5721
- Enumerated
- Feb 27, 2006
- Record last updated
- Jan 16, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Verify Gregory B. Smith in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G49485Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $183.27
1 payment: food and beverage; the largest payer was Abbott Laboratories. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
1 hematology & oncology physician records list a practice address in St Helena
They are 1 of the 13 NPPES records with a practice address in St Helena, and 1,583 hematology & oncology physician records in California.
Other hematology & oncology physician records in California
- Mark Abate, M.D.Santa Barbara, CA1588778674
- Iman Abdalla, MDLos Angeles, CA1730248311
- Haifaa Abdulhaq, MDFresno, CA1508024647
- Nihal Abdulla, MDLos Alamitos, CA1750585345
- Mehrad Abedi, M.D.Sacramento, CA1467459222
- Oyewale Abidoye, M.D.La Jolla, CA1790841815
- Mohammed Abu Zaanona, MDSanta Barbara, CA1922591197
- Mohamad Adada, M.D., PHDRoseville, CA1528590734
- Jesse Adams, MDSacramento, CA1851479554
- Thompson Adams, MDSanta Monica, CA1407880891
Common questions
What is Gregory B. Smith, M.D.'s NPI number?
Gregory B. Smith, M.D.'s National Provider Identifier (NPI) is 1265408447, issued on Feb 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory B. Smith, M.D. located?
The NPPES record lists a practice address at 6 Woodland RD., St Helena, CA, 94574. Phone: (707) 967-5721. Providers update this record themselves, so call before visiting.
How can I verify Gregory B. Smith, M.D.'s license?
NPPES lists California license number G49485, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.