Nicklas B. Oldenburg, M.D.
NPI 1801899760ActiveIndividual· Radiology, Radiation Oncology· Providence, RI
Radiology, Radiation Oncology (M.D.) in Providence, Rhode Island, trained at University of North Carolina at Chapel Hill School of Medicine (class of 1995). 288 Medicare patients in 2024, $533,758 paid; nearly all of their 230 Part D prescriptions were generic (98%). Elekta, Inc. reported $156.75 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1801899760 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 24, 2005 |
| Last updated in NPPES | Mar 10, 2026 |
| Certified by provider | Mar 10, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | MD10931 | RI |
| Radiology, Radiation Oncology | 2085R0001X | 205005 | MA |
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 - Radiation Oncology (MA); Practitioner - Radiation Oncology (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 288 |
|---|---|
| Services billed | 2,951 across 33 procedure codes |
| Paid by Medicare | $533,758 |
Part D prescriptions in 2024
| Prescriptions (claims) | 230 · 497 30-day fills |
|---|---|
| Patients | 83 |
| Total drug cost | $3,260 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | University of North Carolina at Chapel Hill School of Medicine |
|---|---|
| Graduation year | 1995 |
| Medicare specialty | Radiation Oncology |
Medical groups
- Lifespan Physician Group IncProvidence, RI · 1,173 clinicians
- Brown Urology, Inc.Providence, RI · 31 clinicians
- Brockton Radiation OncologyBrockton, MA · 4 clinicians
- Radiation Oncology Associates, Inc.Providence, RI · 4 clinicians
Hospital affiliations
- Rhode Island HospitalProvidence, RI
- Signature Healthcare Brockton HospitalBrockton, MA
- The Miriam HospitalProvidence, RI
Industry payments (Open Payments)
- 2025$156.75 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Elekta, Inc. | $156.75 | 2 |
What the 2025 payments were for
- Food and Beverage$156.75 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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