NPPES file of Aug 9, 2026

Seymour Maynard Bronstein, M.D.

Hematology & Oncology Physician · La Grande, OR

Seymour Maynard Bronstein, M.D. is a hematology & oncology physician with a practice address in La Grande, Oregon, and NPI 1114984424, issued on Apr 28, 2006. Check the license (Oregon MD27924, as entered in NPPES) on the Oregon Medical Board; 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
1114984424
Name
Seymour Maynard Bronstein
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
MD27924 OR
Self-reported in NPPES; status is on the state search
Practice location
900 Sunset Dr, La Grande, OR 97850
Phone
(541) 963-2828
Enumerated
Apr 28, 2006
Record last updated
Jan 9, 2012 (not updated in 14 years: call before relying on the address or phone)
Fax
(541) 975-5132
Medicaid ID
12758 ND
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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Also registered at 900 Sunset Dr

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

  1. Roger Akers, PTPhysical Therapist1396194734
  2. Matthew Allen, M.D.Diagnostic Radiology Physician1558445239
  3. Kylie Andrews, PAPhysician Assistant1437041530
  4. Patrick Archie, MDHematology & Oncology Physician1982895835
  5. Lewis Baynes, M.D.Emergency Medicine Physician1497780266
  6. Kenneth Chasteen, M.D.Emergency Medicine Physician1790711109

Verify Seymour Maynard Bronstein in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD27924    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 Oregon license search

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56% more Medicare Part D claims than the average hematology & oncology physician in 2024

1,366 Medicare Part D claims for 184 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 205 claims were for opioids.

  1. Seymour Bronstein1,366
  2. Specialty average877

Most prescribed

  1. Lorazepam73 claims
  2. Letrozole72 claims
  3. Ondansetron Odt69 claims
  4. Oxycodone Hcl67 claims
  5. Omeprazole59 claims
  6. Prednisone59 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $199.98

2 payments; by number, the most common kind was education; the largest payer was Astellas Pharma US Inc. 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. Seymour Bronstein$199.98
  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.

Hematology & Oncology Physician providers in Oregon

There are 138 hematology & oncology physician records in Oregon.

All 138 in Oregon → Every provider in La Grande →

Other hematology & oncology physician records in Oregon

  1. Gerald Ahmann, MDMedford, OR1124073671
  2. Sharif Ahmed, M.D.Portland, OR1629465554
  3. Jay Andersen, M.D.Portland, OR1922001023
  4. Eric Anderson, M.D., PH.D.Hood River, OR1477765493
  5. Patrick Archie, MDLa Grande, OR1982895835
  6. Tarunpreet Bains, M.D.Portland, OR1144416009
  7. Pragathi Balakrishna, M.D.Medford, OR1295112118
  8. Nicholas Barber, MDSalem, OR1508033465
  9. Christine Barnett, M.D.Portland, OR1679772743
  10. Kenneth Bensch, M.D., PH.D.Portland, OR1750694675

Common questions

What is Seymour Maynard Bronstein, M.D.'s NPI number?

Seymour Maynard Bronstein, M.D.'s National Provider Identifier (NPI) is 1114984424, issued on Apr 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Seymour Maynard Bronstein, M.D. located?

The NPPES record lists a practice address at 900 Sunset Dr, La Grande, OR, 97850. Phone: (541) 963-2828. Providers update this record themselves, so call before visiting.

How can I verify Seymour Maynard Bronstein, M.D.'s license?

NPPES lists Oregon license number MD27924, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Seymour Maynard Bronstein, M.D. prescribe under Medicare Part D?

In 2024, Seymour Maynard Bronstein, M.D. had 1,366 Medicare Part D claims for 184 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

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.