Regg A. Hagge, MD

Medicare activity in 2024

Official CMS public-use data for Regg A. Hagge, 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.

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 cholesterol46%

Hospitals where Regg A. Hagge works

Medicare's Facility Affiliation Data lists Regg A. Hagge 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.

• Avera Gregory HospitalGregory, SD · Critical Access Hospital · Emergency services: listed by Medicare · CCN 431338
• Johnson County Healthcare CenterBuffalo, WY · Critical Access Hospital · Emergency services: not listed by Medicare · CCN 531308
• Memorial Hospital of Converse CountyDouglas, WY · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 531302
• Mobridge Regional Hospital - CAHMobridge, SD · Critical Access Hospital · Emergency services: listed by Medicare · CCN 431325
• Sheridan Memorial HospitalSheridan, WY · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 530006

Practice locations

Addresses where Regg A. Hagge is enrolled with Medicare (CMS data updated October 2, 2026).

• 1309 10th Ave WMobridge, SD 57601 (605) 845‑3692
• 301 Flynn DrMilbank, SD 57252 (605) 432‑4587
• 497 W Lott StBuffalo, WY 82834 (307) 684‑2228

Group practices

Medicare enrollment lists Regg A. Hagge as a member of these groups (CMS data updated October 2, 2026).

• Avera McKennan959 clinicians in the group
• Mobridge Regional Hospital21 clinicians in the group
• Family Medical Center20 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in South Dakota →

Other family doctors in Mobridge

Clinicians with the same Medicare primary specialty in Mobridge, SD — not a recommendation.

• Matthew J. Schaffer, DO
• Emily D. Boden, MD
• Merhej Hannun, MD
• Robert C. Marciano, DO

All family doctors in Mobridge →

Other clinicians in Avera McKennan

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

• Thomas N. Amosson, MD
• Brenda K. Kallemeyn, MD
• Michelle L. McElroy, MD
• Amy J. Noonan, NP
• Susan Passalaqua, MD
• Terry R. Perkins, 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