MARGARET (MEG) SEAVER (MD) – Hematology & Oncology Physician, NPI 1386753127
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,531 HEMATOLOGY/ONCOLOGY in CA
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Provider Addresses for MARGARET (MEG) SEAVER (MD)
4721, Dallas Ranch Road, Antioch, Contra Costa County, California, 94531, United States
ANTIOCH, CA 945318811
Phone: (925) 778-0679
Fax: (925) 778-3567
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 27 Open Payments records for all available years, with a total value of $618.
Total Amount is formed as General ($618) + Research ($0) + Ownership ($0) = $618.
Last reported payment date: 2024-12-06 • Largest payer in this snapshot: Celgene Corporation ($139).
Total Amount
$618
General + Research + Ownership
Payments
27
Total payment records
General Amount
$618
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-06
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Celgene Corporation | $139 |
| Novartis Pharmaceuticals Corporation | $77 |
| PFIZER INC. | $62 |
| TerSera Therapeutics LLC | $43 |
| E.R. Squibb & Sons, L.L.C. | $42 |
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: 2013-03-12
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 |
|---|---|---|---|---|
| I20130312000469 | I | Hematology/Oncology | CA | 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 |
|---|---|---|---|---|
| Q0138 | Injection, ferumoxytol, for treatment of iron deficiency anemia, 1 mg (non-esrd use) | 19,890 | 16 | $0 |
| Q9967 | Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | 5,250 | 32 | $0 |
| J0897 | Injection, denosumab, 1 mg | 3,840 | 13 | $0 |
| J0885 | Injection, epoetin alfa, (for non-esrd use), 1000 units | 940 | 12 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 350 | 122 | $0 |
Insurance plans in this area (ZIP 94531)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Plastic And Reconstructive Surgery | CA | |
| Nurse Practitioner | CA | |
| Hematology, Hematology/Oncology, Medical Oncology | CA | |
| - | CA | |
| Radiation Oncology | CA | |
| - | CA | |
| Hematology, Hematology/Oncology, Internal Medicine, Medical Oncology | CA | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Internal Medicine | CA | |
| Surgical Oncology | CA |
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