Nicklas Oldenburg, M.D.
NPI 1801899760 · Radiation Oncology Physician · Providence, RI
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicklas Oldenburg, M.D. is a Radiation Oncology Physician provider in Providence, RI (NPI 1801899760).
Provider details
- NPI number
- 1801899760
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 205005 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
2,786 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 755 | $120 |
| Intensity Modulated Treatment Delivery, Single Or Multiple Fields/Arcs,via Narrow Spatially and Temporally Modulated Beams, Binary, Dynamic Mlc, Per Treatment SessionG6015 | 736 | $356 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 232 | $190 |
| Continuing Radiation Therapy Consultation Per Week77336 | 226 | $89 |
| Calculation of Radiation Therapy Dose77300 | 178 | $65 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 164 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Tamsulosin Hcl | 201 | 66 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 827 N Main St Ste 4Providence, RI 02904-5751Phone: (401) 272-7799
Registry dates
- Enumerated
- 2005-05-24
- Last updated
- 2026-03-10
- Certified
- 2026-03-10
Frequently asked questions
- What is Nicklas Oldenburg's NPI number?
- Nicklas Oldenburg's National Provider Identifier (NPI) is 1801899760, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicklas Oldenburg's specialty?
- Nicklas Oldenburg is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Nicklas Oldenburg located?
- Nicklas Oldenburg's practice location on file with NPPES is 825 N Main St, Providence, RI 02904-5707.
- What is Nicklas Oldenburg's phone number?
- The practice phone number listed in the NPPES registry for Nicklas Oldenburg is (401) 521-9700.
- Does Nicklas Oldenburg accept Medicare?
- Nicklas Oldenburg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicklas Oldenburg's NPI active?
- Yes — Nicklas Oldenburg's NPI (1801899760) is active in the NPPES registry as of the last update on 2026-03-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.