Quick answers
- Which hospitals does Oksana Chien work at?
- Medicare's official clinician data lists Oksana Chien at 2 hospitals: Copley Memorial Hospital and Northwestern Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Oksana Chien see patients?
- Medicare's clinician data lists 8 practice locations, including Chicago, IL and Aurora, IL. Call before your visit to confirm the address.
- What is Oksana Chien's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Oksana Chien accept Medicare assignment?
- Yes. Medicare's clinician data says Oksana Chien accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Oksana Chien?
- (312) 563-2875, as listed in official Medicare / NPI Registry data.
- What is Oksana Chien's NPI number?
- 1740846112. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Oksana Chien works
Medicare's Facility Affiliation Data lists Oksana Chien at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Copley Memorial HospitalAurora, IL · Acute Care Hospital · CCN 140029
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
Practice locations
Addresses where Oksana Chien is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 1700 W Van Buren StChicago, IL 60612 (312) 563‑2875
- 2000 Ogden AveAurora, IL 60504 (312) 942‑6800
- 2000 Ogden Ave, Suite A1100Aurora, IL 60504 (630) 978‑6250
- 2040 Ogden AveAurora, IL 60504
- 251 E HuronChicago, IL 60611
Group practices
Medicare enrollment lists Oksana Chien as a member of these groups (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
- Rush University Medical Group1,551 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1740846112 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians