Sebastian Obrzut, MD

Medicare activity in 2024

Official CMS public-use data for Sebastian Obrzut, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Nuclear medicine study from skull base to mid-thigh with ct scan (78815)143 services
2. Nuclear medicine study whole body with ct scan (78816)50 services
3. Nuclear medicine study of bone and/or joint whole body (78306)38 services
4. Radioactive drug therapy through a vein (79101)34 services
5. Nuclear medicine study, spect imaging with concurrent ct scan, 1 area or single acquisition, single day imaging (78830)24 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure65%
• High cholesterol58%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)50%
• Arthritis32%
• Depression24%
• Diabetes23%

Hospitals where Sebastian Obrzut works

Medicare's Facility Affiliation Data lists Sebastian Obrzut at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• OHSU Hospital and ClinicsPortland, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380009
• Salem HospitalSalem, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380051
• St Charles Medical Center - BendBend, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380047

Practice locations

Addresses where Sebastian Obrzut is enrolled with Medicare (CMS data updated October 2, 2026).

• 3181 SW Sam Jackson Park RdPortland, OR 97239 (503) 494‑8311

Group practices

Medicare enrollment lists Sebastian Obrzut as a member of this group (CMS data updated October 2, 2026).

• University Professional Services1,724 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Oregon →

Other radiologists in Portland

Clinicians with the same Medicare primary specialty in Portland, OR — not a recommendation.

• Morgan Prince, MD
• Jorge R. Walker Jr., MD
• Sienna J. Ringgenberg, MD
• Scott P. Landreth, MD
• Sebastian Elstrott, MD
• Mark A. Gibson, MD
• Eric B. Harboldt, MD
• Richard J. Koesel, MD

All radiologists in Portland →

Other clinicians in University Professional Services

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• James K. Boehnlein, MD
• Erika J. Olson, NP
• Matthew O'Brien, MD
• Lorne Walker, MD
• Annie F. Kuo, MD
• Jacqueline Vuky, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians