Charles Eaton Stewart, M.D. PH.D.
NPI 1043243884ActiveIndividual· Radiology, Radiation Oncology· Lewiston, ME
Radiology, Radiation Oncology (M.D. PH.D.) with Warren Clinic Inc, practicing in Lewiston, Maine. 267 Medicare patients in 2024, $251,019 paid; nearly all of their 246 Part D prescriptions were generic (94%). Daiichi Sankyo Inc. was the largest of 4 companies reporting payments in 2025, $262.07 in all, mostly food and beverage. Lists Central Maine Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1043243884 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. PH.D. |
| Sole proprietor | No |
| NPI issued | Jul 7, 2006 |
| Last updated in NPPES | Jun 24, 2026 |
| Certified by provider | Jun 24, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | MD29918 | ME |
| Radiology, Radiation Oncology | 2085R0001X | 24962 | OK |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Radiation Oncology (ME); Practitioner - Radiation Oncology (OK) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 267 |
|---|---|
| Services billed | 3,460 across 25 procedure codes |
| Paid by Medicare | $251,019 |
Part D prescriptions in 2024
| Prescriptions (claims) | 246 · 347 30-day fills |
|---|---|
| Patients | 127 |
| Total drug cost | $6,526 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2001 |
|---|---|
| Medicare specialty | Radiation Oncology |
Medical group
- Warren Clinic IncTulsa, OK · 883 clinicians
Hospital affiliations
- Central Maine Medical CenterLewiston, ME
- Saint Francis Hospital South, LLCTulsa, OK
- Saint Francis Hospital, IncTulsa, OK
Industry payments (Open Payments)
- 2025$262.07 · 15 payments from 4 companies
- 2024$49.53 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $163.30 | 10 |
| Novartis Pharmaceuticals Corporation | $57.28 | 3 |
| Bayer Healthcare Pharmaceuticals Inc. | $27.62 | 1 |
| Beone Medicines USA, Inc. | $13.87 | 1 |
What the 2025 payments were for
- Food and Beverage$262.07 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other radiation oncologists in Lewiston
- 1235101825