Sung Rak Yun, M.D.
NPI 1376837716ActiveIndividual· Internal Medicine· Kenosha, WI
Internal Medicine (M.D.) with Vituity-Wisconsin Hm SC, practicing in Kenosha, Wisconsin. In 2024 Medicare paid $58,179 for 252 patients, and Part D covered 463 of their prescriptions, 89% of them generic. Pfizer Inc. reported $21.15 in payments in 2025, mostly food and beverage. Lists Froedtert South Inc. as a hospital affiliation.
Overview
| NPI | 1376837716 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 2, 2011 |
| Last updated in NPPES | Dec 23, 2021 |
| Certified by provider | Dec 23, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 64715-20 | 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 - Internal Medicine (IL); Practitioner - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 252 |
|---|---|
| Services billed | 696 across 10 procedure codes |
| Paid by Medicare | $58,179 |
Part D prescriptions in 2024
| Prescriptions (claims) | 463 · 478 30-day fills |
|---|---|
| Patients | 200 |
| Total drug cost | $18,289 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Vituity-Wisconsin Hm SCPleasant Prairie, WI · 29 clinicians
Hospital affiliation
- Froedtert South Inc.Kenosha, WI
Other facilities
- Horizon Homecare and HospiceHospice · Milwaukee, WI
Industry payments (Open Payments)
- 2025$21.15 · 1 payment from 1 company
- 2024$20.24 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $21.15 | 1 |
What the 2025 payments were for
- Food and Beverage$21.15 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 41 internal medicine physicians in Kenosha · All internal medicine physicians in Wisconsin