James A. Ottevaere Ii, MD

Medicare activity in 2024

Official CMS public-use data for James A. Ottevaere Ii, 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. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)24 services
2. Anesthesia for other procedure on large bowel using an endoscope (00811)21 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 pressure75%
• High cholesterol74%
• Arthritis44%
• Ischemic heart disease39%
• Chronic kidney disease39%
• Diabetes36%

Hospitals where James A. Ottevaere Ii works

Medicare's Facility Affiliation Data lists James A. Ottevaere Ii 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.

• Mayo Clinic Health System Eau Claire HospitalEau Claire, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520070
• Mayo Clinic Health System-NorthlandBarron, WI · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 521315

Practice locations

Addresses where James A. Ottevaere Ii is enrolled with Medicare (CMS data updated October 2, 2026).

• 1221 Whipple StEau Claire, WI 54703 (715) 838‑3806
• 733 W Clairemont AveEau Claire, WI 54701 (715) 838‑5222

Group practices

Medicare enrollment lists James A. Ottevaere Ii as a member of this group (CMS data updated October 2, 2026).

• Mayo Clinic Health System-Northwest Wisconsin Region Inc802 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Wisconsin →

Other anesthesiologists in Eau Claire

Clinicians with the same Medicare primary specialty in Eau Claire, WI — not a recommendation.

• Alex Suginaka, DO
• Christopher N. Deyo, MD
• David D. Easker, MD
• Daniel J. Hehli, DO
• Christian D. Stevens, MD
• Michael Theisen, MD
• Randy Loftus, MD
• Scott F. Bobholz, MD

All anesthesiologists in Eau Claire →

Other clinicians in Mayo Clinic Health System-Northwest Wisconsin Region Inc

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

• Lauren M. Simpson
• Justine Abel, DO
• Lauren A. Perry
• Cory Stewart, MD
• Zachary Osborne, MD
• Sandeep K. Basu, 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