Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Nicklas B Oldenburg, MD

Individual provider Radiation Oncology Physician · NPI 1801899760

Dr. Nicklas B Oldenburg, MD is a Radiation Oncology in Providence, Rhode Island. Graduated from University of North Carolina at Chapel Hill School of Medicine in 1995, 31 years ago. Practices with Brockton Radiation Oncology, a 4-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Massachusetts and Rhode Island.

Years since qualifying
31
Trained at
University of North Carolina at Chapel Hill School of Medicine
Licensed in
MA, RI
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

825 N Main St
Providence, RI 02904-5707
Phone: (401) 521-9700
Fax: (401) 751-1686
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 827 N Main St Ste 4, Providence, RI 02904-5751 — (401) 272-7799

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence MD10931 (RI)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 205005 (MA)

Record details

NPI number1801899760
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2005
Last updated in NPPESMarch 10, 2026
Certification dateMarch 10, 2026
Mailing address825 N Main St, Providence, RI 02904-5767

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyRADIATION ONCOLOGY
Medical schoolUNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL SCHOOL OF MEDICINE
Graduated 1995 (31 years in practice)
Group practice Brockton Radiation Oncology — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

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