Quick answers
- Does Yunji Yoon accept Medicare assignment?
- Yes. Medicare's clinician data says Yunji Yoon 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 Yunji Yoon see?
- In 2024, CMS data shows 234 Original Medicare patients and 421 services for Yunji Yoon. This counts Original Medicare only and measures volume, not quality.
- What is Yunji Yoon's NPI number?
- 1558132522. 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 Yunji Yoon, 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 | 234 |
|---|---|
| Services billed to Medicare | 421 |
| Different services or procedures | 5 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month (99439)146 services
- Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month (99490)146 services
- Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)47 services
- Initial nursing facility care with moderate level of medical decision making, per day, if using time, at least 35 minutes (99305)41 services
- Comprehensive assessment of and care planning for patients requiring chronic care management services (list separately in addition to primary monthly care management service) (G0506)41 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%
- Depression68%
- Arthritis57%
- Alzheimer's disease or dementia54%
- Diabetes53%
Practice locations
Addresses where Yunji Yoon is enrolled with Medicare (CMS data updated October 2, 2026).
- 2501 Chatham RdSpringfield, IL 62704 (212) 734‑6621
Group practices
Medicare enrollment lists Yunji Yoon as a member of this group (CMS data updated October 2, 2026).
- Great Health Medical Afil PC2 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Springfield
Clinicians with the same Medicare primary specialty in Springfield, IL — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558132522 |
| 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
- 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