James R. Giesen, DO

Medicare activity in 2024

Official CMS public-use data for James R. Giesen, 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. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)55 services
2. Emergency department visit with moderate level of medical decision making (99284)31 services
3. Emergency department visit with high level of medical decision making (99285)25 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)21 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)14 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 cholesterol67%
• Arthritis53%
• Chronic kidney disease31%
• COPD31%
• Atrial fibrillation31%

Hospitals where James R. Giesen works

Medicare's Facility Affiliation Data lists James R. Giesen 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.

• Asante Rogue Regional Medical CenterMedford, OR · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 380018
• Asante Three Rivers Medical CenterGrants Pass, OR · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 380002

Practice locations

Addresses where James R. Giesen is enrolled with Medicare (CMS data updated October 2, 2026).

• 2825 E Barnett RdMedford, OR 97504 (541) 789‑7000
• 500 SW Ramsey AveGrants Pass, OR 97527 (541) 472‑7000

Group practices

Medicare enrollment lists James R. Giesen as a member of these groups (CMS data updated October 2, 2026).

• Asante149 clinicians in the group
• Asante Three Rivers Medical Center LLC99 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Oregon →

Other emergency medicine doctors in Medford

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

• David Levin, DO
• Alicia M. Welder, MD
• Evan M. Fisch, MD
• Alexander A. Grimaldi, DO
• Alicia Bond, MD
• Phillip A. Stawski, MD
• Brian P. Phelps, MD
• Jeffrey G. Williams, MD

All emergency medicine doctors in Medford →

Other clinicians in Asante

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

• Ashish Dwary, MD
• Courtney L. Harrington, NP
• Kelly A. Dale, NP
• Jon R. Brower, MD
• James C. Loos, MD
• Evan M. Fisch, 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