Quick answers
- Does Estelle S. Yoo accept Medicare assignment?
- Yes. Medicare's clinician data says Estelle S. Yoo accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Estelle S. Yoo see?
- In 2024, CMS data shows 81 Original Medicare patients and 142 services for Estelle S. Yoo. This counts Original Medicare only and measures volume, not quality.
- What is Estelle S. Yoo's NPI number?
- 1598953846. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Estelle S. Yoo, 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.
| Original Medicare patients | 81 |
|---|---|
| Services billed to Medicare | 142 |
| Different services or procedures | 29 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)41 services
- Diagnostic exam of voice box using a flexible endoscope (31575)17 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)13 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 pressure70%
- High cholesterol69%
- Arthritis44%
- Depression36%
- Diabetes35%
- Chronic kidney disease32%
Hospitals where Estelle S. Yoo works
Medicare's Facility Affiliation Data lists Estelle S. Yoo 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
- Sanford Medical Center BismarckBismarck, ND · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 350015
- Sanford Usd Medical CenterSioux Falls, SD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 430027
Practice locations
Addresses where Estelle S. Yoo is enrolled with Medicare (CMS data updated October 2, 2026). The first 5 of 6; the Medicare profile lists all.
- 1310 W 22nd StSioux Falls, SD 57105 (605) 328‑8200
- 1325 S Cliff AveSioux Falls, SD 57105
- 1325 S Cliff Ave, RadiologySioux Falls, SD 57105 (605) 322‑4878
- 3318 N 14th StBismarck, ND 58503 (701) 323‑8300
- 701 E Rosser AveBismarck, ND 58501 (701) 323‑6815
Group practices
Medicare enrollment lists Estelle S. Yoo as a member of these groups (CMS data updated October 2, 2026).
- Avera McKennan959 clinicians in the group
- Sanford Medical Center857 clinicians in the group
- Sanford Bismarck556 clinicians in the group
Specialties
- Otolaryngologyprimary
Other ENT doctors in Sioux Falls
Clinicians with the same Medicare primary specialty in Sioux Falls, SD — not a recommendation.
Other clinicians in Avera McKennan
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2007 (19 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1598953846 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians