Sang Yoon Oh, M.D.
NPI 1538306014ActiveIndividual· Internal Medicine· Centralia, WA
Internal Medicine (M.D.) with South Sound Inpatient Physicians PLLC, practicing in Centralia, Washington. 362 Medicare patients in 2024, $77,871 paid; nearly all of their 536 Part D prescriptions were generic (91%). Astrazeneca Pharmaceuticals LP was the largest of 3 companies reporting payments in 2025, $57.56 in all, mostly food and beverage. Lists Multicare Good Samaritan Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1538306014 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 21, 2009 |
| Last updated in NPPES | Feb 18, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD 60082411 | WA |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Internal Medicine (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 362 |
|---|---|
| Services billed | 1,020 across 7 procedure codes |
| Paid by Medicare | $77,871 |
Part D prescriptions in 2024
| Prescriptions (claims) | 536 · 552 30-day fills |
|---|---|
| Patients | 203 |
| Total drug cost | $24,519 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- South Sound Inpatient Physicians PLLCArlington, WA · 422 clinicians
Hospital affiliations
- Multicare Good Samaritan HospitalPuyallup, WA
- Tacoma General Allenmore HospitalTacoma, WA
Industry payments (Open Payments)
- 2025$57.56 · 3 payments from 3 companies
- 2024$26.68 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $22.47 | 1 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $17.56 | 1 |
| Amgen Inc. | $17.53 | 1 |
What the 2025 payments were for
- Food and Beverage$57.56 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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