Theresa D. Oey-Trudeau, MD

Medicare activity in 2024

Official CMS public-use data for Theresa D. Oey-Trudeau, 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. Removal of polyps or growths of large bowel using a flexible endoscope with electrical cautery (45384)232 services
2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)131 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)56 services
4. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)54 services
5. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)46 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 pressure71%
• High cholesterol69%
• Arthritis41%
• Diabetes25%
• Ischemic heart disease21%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)19%

Hospitals where Theresa D. Oey-Trudeau works

Medicare's Facility Affiliation Data lists Theresa D. Oey-Trudeau 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.

• Brookings Health SystemBrookings, SD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 430008

Practice locations

Addresses where Theresa D. Oey-Trudeau is enrolled with Medicare (CMS data updated October 2, 2026).

• 300 22nd AveBrookings, SD 57006 (605) 692‑6351
• 310 22nd AveBrookings, SD 57006 (605) 697‑9500

Group practices

Medicare enrollment lists Theresa D. Oey-Trudeau as a member of this group (CMS data updated October 2, 2026).

• City of Brookings115 clinicians in the group

Specialties

• General Surgeryprimary

Find other General Surgery doctors in South Dakota →

Other general surgeons in South Dakota

Clinicians with the same Medicare primary specialty in South Dakota — not a recommendation.

• Andrew Chontos, MD
• Stephanie Hung, MD
• Cy B. Haatvedt, MD
• Sujit V. Sakpal, MD
• Wesley L. Sufficool Jr., DO
• Michelle L. Bryan, MD
• David S. Fromm, MD
• Andrew D. Vanosdol, MD

All general surgeons in South Dakota →

Other clinicians in City of Brookings

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

• Kip A. Kludt, PT
• Sara R. Peterson, PT
• Jared L. Mouw, PA
• Amy L. Hogue, MD
• Sarah R. Lepke, NP
• Jill D. Kruse, DO

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