Quick answers
- Which hospitals does Won H. Oh work at?
- Medicare's official clinician data lists Won H. Oh at 3 hospitals: Northwestern Medicine Central Dupage Hospital, Northwestern Memorial Hospital and The University of Chicago Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Won H. Oh see patients?
- Medicare's clinician data lists 9 practice locations, including Evanston, IL, Chicago, IL and Lake Forest, IL. Call before your visit to confirm the address.
- What is Won H. Oh's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Won H. Oh accept Medicare assignment?
- Yes. Medicare's clinician data says Won H. Oh 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.
- Does Won H. Oh offer telehealth?
- Medicare's clinician data says Won H. Oh offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Won H. Oh?
- (312) 503-1944, as listed in official Medicare / NPI Registry data.
- What is Won H. Oh's NPI number?
- 1053899138. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Won H. Oh works
Medicare's Facility Affiliation Data lists Won H. Oh at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Northwestern Memorial HospitalChicago, IL · Acute Care Hospital · CCN 140281
- The University of Chicago Medical CenterChicago, IL · Acute Care Hospital · CCN 140088
Practice locations
Addresses where Won H. Oh is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 1630 Sherman AveEvanston, IL 60201
- 259 E Erie StChicago, IL 60611 (312) 503‑1944
- 355 E Grand AveChicago, IL 60611 (888) 824‑0200
- 5841 S Maryland AveChicago, IL 60637 (888) 824‑0200
- 635 N Dearborn StChicago, IL 60654 (312) 926‑0404
Group practices
Medicare enrollment lists Won H. Oh as a member of these groups (CMS data updated 2026-10-02).
- Northwestern Medical Faculty Foundation4,503 clinicians in the group
- University of Chicago1,712 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Evanston
Clinicians with the same Medicare primary specialty in Evanston, IL — not a recommendation.
Clinician information
| Graduation year | 2018 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1053899138 |
| 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