Jennifer A. Fillaus, DO

Medicare activity in 2024

Official CMS public-use data for Jennifer A. Fillaus, 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. Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)2,600 services
2. Insertion of needle into vein for collection of blood sample (36415)456 services
3. Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count (85025)315 services
4. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)283 services
5. Blood test, basic group of blood chemicals (calcium, total) (80048)251 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 cholesterol66%
• Arthritis41%
• Chronic kidney disease37%
• Diabetes29%
• Depression25%

Hospitals where Jennifer A. Fillaus works

Medicare's Facility Affiliation Data lists Jennifer A. Fillaus 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 Sacred Heart HospitalYankton, SD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 430012
• Bryan Medical CenterLincoln, NE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 280003
• Faith HealthNorfolk, NE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 280125

Practice locations

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

• 1104 W 8th StYankton, SD 57078 (605) 665‑7841

Group practices

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

• Yankton Medical Clinic PC59 clinicians in the group

Specialties

• Internal Medicineprimary

Find other Internal Medicine doctors in South Dakota →

Other internal medicine doctors in Yankton

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

• Boakye Yiadom Adomako, MD
• Daniel J. Megard, MD
• Tyler L. Hanson, MD
• Jonathon P. Demuth, MD
• James L. Boysen, MD
• Martha Holstein, MD
• Muhammad Khan, MD
• Kesiena J. Akpoigbe, MD

All internal medicine doctors in Yankton →

Other clinicians in Yankton Medical Clinic PC

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

• Daniel J. Megard, MD
• Spencer R. Ferrell, 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