Jason R. Koelewyn, MD

Medicare activity in 2024

Official CMS public-use data for Jason R. Koelewyn, 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. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)72 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)49 services
3. Hospital discharge day management, more than 30 minutes (99239)20 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)15 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 cholesterol75%
• Arthritis47%
• Diabetes41%
• Atrial fibrillation41%
• Depression38%

Hospitals where Jason R. Koelewyn works

Medicare's Facility Affiliation Data lists Jason R. Koelewyn 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
• Sioux Center HealthSioux Center, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161346

Practice locations

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

• 1101 9th St SE, Sioux Center Health Medical ClinicSioux Center, IA 51250 (712) 722‑1271

Group practices

Medicare enrollment lists Jason R. Koelewyn as a member of this group (CMS data updated October 2, 2026).

• Sioux Center Health36 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Iowa →

Other family doctors in Sioux Center

Clinicians with the same Medicare primary specialty in Sioux Center, IA — not a recommendation.

• Lorianne S. Andersen, MD
• Lornell E. Hansen Ii, MD
• Lindsey M. Junk
• Casie L. Leightner, MD
• Daniel T. Vandenbosch, MD
• Alison J. Schutt, MD
• Scott A. Rens, MD
• Darren Chester, MD

All family doctors in Sioux Center →

Other clinicians in Sioux Center Health

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

• Lorianne S. Andersen, MD
• Ashley M. Anderson
• Lindsey M. Junk
• Jeanne M. Kleinhesselink, NP
• Brett W. Hutton
• Scott A. Rens, 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