Margaret (Meg) Seaver, MD
NPI 1386753127ActiveIndividual· Internal Medicine, Hematology & Oncology· Antioch, CA
Internal Medicine, Hematology & Oncology (MD) in Antioch, California, trained at University of Rochester School of Medicine and Dentistry (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $1,654,686 for 1,499 claims, against $761,225 paid for services in 2024. Array Biopharma Inc was the largest of 13 companies reporting payments in 2025, $587.67 in all, mostly food and beverage.
Overview
| NPI | 1386753127 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 29, 2006 |
| Last updated in NPPES | Oct 16, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A120074 | CA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 291 |
|---|---|
| Services billed | 54,382 across 104 procedure codes |
| Paid by Medicare | $761,225 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,499 · 2,098 30-day fills |
|---|---|
| Patients | 192 |
| Total drug cost | $1,654,686 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | University of Rochester School of Medicine and Dentistry |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Epic CareWalnut Creek, CA · 55 clinicians
Hospital affiliations
- Contra Costa Regional Medical CenterMartinez, CA
- John Muir Medical Center - Concord CampusConcord, CA
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CA
- Sutter Delta Medical CenterAntioch, CA
Industry payments (Open Payments)
- 2025$587.67 · 30 payments from 13 companies
- 2024$251.66 · 12 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Array Biopharma Inc | $198.05 | 12 |
| E.R. Squibb & Sons, L.L.C. | $58.53 | 3 |
| Janssen Biotech, Inc. | $44.16 | 2 |
| Adc Therapeutics America, Inc. | $44.03 | 2 |
| Gilead Sciences, Inc. | $41.99 | 2 |
What the 2025 payments were for
- Food and Beverage$587.67 · 30 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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