Won H. Oh, PA-C
NPI 1053899138ActiveIndividual· Physician Assistant· Chicago, IL
Physician Assistant (PA-C) with Northwestern Medical Faculty Foundation and 1 other group, practicing in Chicago, Illinois. 24 Medicare patients in 2024, $7,137 paid; nearly all of their 112 Part D prescriptions were generic (99%). Edwards Lifesciences Corporation was the largest of 3 companies reporting payments in 2025, $664.71 in all, mostly food and beverage. Lists Northwestern Medicine Central Dupage Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1053899138 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Aug 1, 2018 |
| Last updated in NPPES | Feb 27, 2026 |
| Certified by provider | Feb 27, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 085006591 | IL |
| Physician Assistant, Surgical | 363AS0400X | 085006591 | IL |
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 - Physician Assistant (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 24 |
|---|---|
| Services billed | 30 across 12 procedure codes |
| Paid by Medicare | $7,137 |
Part D prescriptions in 2024
| Prescriptions (claims) | 112 · 129 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $460.67 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical groups
- Northwestern Medical Faculty FoundationChicago, IL · 4,503 clinicians
- University of ChicagoChicago, IL · 1,712 clinicians
Hospital affiliations
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Northwestern Memorial HospitalChicago, IL
- The University of Chicago Medical CenterChicago, IL
Industry payments (Open Payments)
- 2025$664.71 · 8 payments from 3 companies
- 2024$173.36 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Edwards Lifesciences Corporation | $529.17 | 6 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $117.53 | 1 |
| Pfizer Inc. | $18.01 | 1 |
What the 2025 payments were for
- Food and Beverage$664.71 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 1,516 physician assistants in Chicago · All physician assistants in Illinois