Bobby Byung Sun Yun, MD
NPI 1154399061ActiveIndividual· Family Medicine· Oshkosh, WI
Family Medicine (MD) in Oshkosh, Wisconsin, trained at University of Wisconsin School of Medicine (class of 1998). 56 Medicare patients in 2024, $6,165 paid; nearly all of their 215 Part D prescriptions were generic (90%). Exact Sciences Corporation was the largest of 2 companies reporting payments in 2025, $30.92 in all, mostly food and beverage.
Overview
| NPI | 1154399061 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 8, 2006 |
| Last updated in NPPES | Nov 19, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 46857 | WI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Family Practice (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 56 |
|---|---|
| Services billed | 97 across 18 procedure codes |
| Paid by Medicare | $6,165 |
Part D prescriptions in 2024
| Prescriptions (claims) | 215 · 270 30-day fills |
|---|---|
| Patients | 125 |
| Total drug cost | $3,843 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Family Practice |
Medical group
- Urgent Care Physcians, LtdAppleton, WI · 5 clinicians
Industry payments (Open Payments)
- 2025$30.92 · 2 payments from 2 companies
- 2024$15.70 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $16.83 | 1 |
| Lilly USA, LLC | $14.09 | 1 |
What the 2025 payments were for
- Food and Beverage$30.92 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 54 family medicine physicians in Oshkosh · All family medicine physicians in Wisconsin