Leigh Marie Seamon, D.O.
NPI 1821147422ActiveIndividual· Obstetrics & Gynecology, Gynecologic Oncology· Grand Rapids, MI
Obstetrics & Gynecology, Gynecologic Oncology (D.O.) with Advantage Health/Saint Mary's Medical Group and 1 other group, practicing in Grand Rapids, Michigan. Their prescriptions cost Medicare Part D more than their services did: $336,223 for 248 claims, against $43,093 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 2 companies reporting payments in 2025, $126.57 in all, mostly food and beverage. Lists Corewell Health Reed City Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1821147422 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Jan 10, 2007 |
| Last updated in NPPES | Apr 2, 2026 |
| Certified by provider | Apr 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology, Gynecologic Oncology Primary | 207VX0201X | 34.008774 | OH |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gynecological Oncology (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 60 |
|---|---|
| Services billed | 862 across 92 procedure codes |
| Paid by Medicare | $43,093 |
Part D prescriptions in 2024
| Prescriptions (claims) | 248 · 274 30-day fills |
|---|---|
| Patients | 60 |
| Total drug cost | $336,223 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Gynecological Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Advantage Health/Saint Mary's Medical GroupCaledonia, MI · 505 clinicians
- Cancer and Hematology Centers of Western Mi, P.C.Holland, MI · 110 clinicians
Hospital affiliations
- Corewell Health Reed City HospitalReed City, MI
- Corewell Health Zeeland HospitalZeeland, MI
- Mercy Health Saint Mary'sGrand Rapids, MI
- Spectrum HealthGrand Rapids, MI
- Spectrum Health United HospitalGreenville, MI
Industry payments (Open Payments)
- 2025$126.57 · 2 payments from 2 companies
- 2024$2,043 · 9 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $101.20 | 1 |
| Hologic Sales and Service, LLC | $25.37 | 1 |
What the 2025 payments were for
- Food and Beverage$126.57 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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