Oksana Chien, APRN, CNP
NPI 1740846112ActiveIndividual· Nurse Practitioner· Chicago, IL
Nurse Practitioner (APRN, CNP) with Northwestern Medical Faculty Foundation and 1 other group, practicing in Chicago, Illinois. Mostly services rather than prescriptions: Medicare paid $12,766 for 104 patients in 2024, with only 38 Part D claims. Stryker Corporation was the largest of 3 companies reporting payments in 2025, $73.82 in all, mostly food and beverage. Lists Copley Memorial Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1740846112 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APRN, CNP |
| Sole proprietor | Yes |
| NPI issued | May 11, 2019 |
| Last updated in NPPES | Oct 10, 2024 |
| Certified by provider | Oct 10, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 209019070 | IL |
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 - Nurse Practitioner (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 104 |
|---|---|
| Services billed | 157 across 26 procedure codes |
| Paid by Medicare | $12,766 |
Part D prescriptions in 2024
| Prescriptions (claims) | 38 · 89 30-day fills |
|---|---|
| Patients | 14 |
| Total drug cost | $9,281 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Northwestern Medical Faculty FoundationChicago, IL · 4,503 clinicians
- Rush University Medical GroupChicago, IL · 1,551 clinicians
Hospital affiliations
- Copley Memorial HospitalAurora, IL
- Northwestern Memorial HospitalChicago, IL
Industry payments (Open Payments)
- 2025$73.82 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $32.41 | 1 |
| Arjo Inc. | $22.60 | 1 |
| Merck Sharp & Dohme LLC | $18.81 | 1 |
What the 2025 payments were for
- Food and Beverage$73.82 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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