SEYMOUR MAYNARD BRONSTEIN (M.D.) – Hematology & Oncology Physician, NPI 1114984424
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
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Provider Addresses for SEYMOUR MAYNARD BRONSTEIN (M.D.)
Grande Ronde Hospital, 900, Sunset Drive, La Grande, Union County, Oregon, 97850, United States
LA GRANDE, OR 978501387
Phone: (541) 963-2828
Fax: (541) 975-5132
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 2 Open Payments records for all available years, with a total value of $200.
Total Amount is formed as General ($200) + Research ($0) + Ownership ($0) = $200.
Last reported payment date: 2024-04-26 • Largest payer in this snapshot: Astellas Pharma US Inc ($200).
Total Amount
$200
General + Research + Ownership
Payments
2
Total payment records
General Amount
$200
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-04-26
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Astellas Pharma US Inc | $200 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2007-12-26
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20071226000097 | I | Hematology/Oncology | OR | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 28 | 23 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 16 | 13 | $0 |
Insurance plans in this area (ZIP 97850)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| Physician Assistant | OR | |
| Cardiovascular Disease (Cardiology) | OR | |
| Internal Medicine | OR | |
| Family Practice | OR | |
| Diagnostic Radiology | UT | |
| - | OR | |
| Clinical Social Worker | OR | |
| Physician Assistant | CO | |
| O B S T E T R I C S/ G Y N E C O L O G Y | OR | |
| Orthopedic Surgery | OR |
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