Gregory D. Osmundson, MD

Medicare activity in 2024

Official CMS public-use data for Gregory D. Osmundson, 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 cataract with insertion of prosthetic lens (66984)207 services
2. Measurement of corneal curvature and depth of eye (92136)141 services
3. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)81 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)63 services
5. Imaging of retina (92134)60 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 cholesterol71%
• Arthritis31%
• Diabetes29%
• Ischemic heart disease23%
• Anxiety23%

Hospitals where Gregory D. Osmundson works

Medicare's Facility Affiliation Data lists Gregory D. Osmundson 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 McKennan Hospital & University Health CenterSioux Falls, SD · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 430016
• Prairie Lakes Healthcare System, IncWatertown, SD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 430005

Practice locations

Addresses where Gregory D. Osmundson is enrolled with Medicare (CMS data updated October 2, 2026).

• 1415 N Sanborn BlvdMitchell, SD 57301 (605) 336‑6294
• 6601 S Minnesota Ave, Suite 200Sioux Falls, SD 57108 (605) 336‑6294
• 705 14th Ave NEWatertown, SD 57201 (605) 886‑7722

Group practices

Medicare enrollment lists Gregory D. Osmundson as a member of this group (CMS data updated October 2, 2026).

• Ophthalmology Ltd12 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in South Dakota →

Other ophthalmologists in Mitchell

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

• Ryan L. Geraets, MD
• Bryan J. Hammer, MD
• Michael K. Eide, MD

All ophthalmologists in Mitchell →

Other clinicians in Ophthalmology Ltd

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

• Ryan L. Geraets, MD
• Emily L. Walters, OD
• Tyler W. Vermeer, OD
• Karen E. Dickes, DO
• Dustin L. Dierks, MD
• Bryan J. Hammer, 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