NPPES file of Aug 9, 2026

Grant Swanson, M.D.

Hematology & Oncology Physician · Monterey, CA

Grant Swanson, M.D. is a hematology & oncology physician with a practice address in Monterey, California, and NPI 1477965861, issued on May 20, 2014. Check the license (California G48931, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1477965861
Name
Grant Swanson
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
G48931 CA
Self-reported in NPPES; status is on the state search
Practice location
23625 Holman Hwy, Monterey, CA 93940
Phone
(831) 622-2749
Enumerated
May 20, 2014
Record last updated
May 20, 2014 (not updated in 12 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →

Also registered at 23625 Holman Hwy

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jerry Ainsworth, M.D.Psychiatry Physician1720099427
  2. Andres Aldrete, M.D.Emergency Medicine Physician1679580831
  3. Ian Atkinson, M.D.Hospitalist Physician1205173580
  4. Matthew Awerbuck, M.D.Internal Medicine Physician1104189828
  5. Rachel Badger, PHARMDPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1942055132
  6. Shoshauna Baer, M.D.Hospitalist Physician1881126209

Verify Grant Swanson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G48931    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Industry payments in 2024: $17.64

1 payment: food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. 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.

  1. Grant Swanson$17.64
  2. Specialty average$7,481.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Grant Swanson among 1,583 hematology & oncology physician records in California

Grant Swanson, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 81% of them.

  • NPI issued2014 · 81% of these records are older, 16% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 71% of these records are
  • Record last updated2014 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

All 1,583 in California → Every provider in Monterey → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Thomas Bradley, MD, PHDMonterey, CA 939401902979644
  2. Kent Bransford, M.D.Monterey, CA 939401285680959
  3. Anushi Bulumulle, M.DMonterey, CA 939401770996589
  4. Kindra CastorMonterey, CA 939401568089613
  5. Arina Golubeva-Ganeles, M.D.Monterey, CA 939401790739191
  6. Ping Hu, M.D.Monterey, CA 939401982867297
  7. Nancy Rubin, D.O.Monterey, CA 939401003980947
  8. Roger Shiffman, M.D.Monterey, CA 939401033156682

Common questions

What is Grant Swanson, M.D.'s NPI number?

Grant Swanson, M.D.'s National Provider Identifier (NPI) is 1477965861, issued on May 20, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Grant Swanson, M.D. located?

The NPPES record lists a practice address at 23625 Holman Hwy, Monterey, CA, 93940. Phone: (831) 622-2749. Providers update this record themselves, so call before visiting.

How can I verify Grant Swanson, M.D.'s license?

NPPES lists California license number G48931, 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.