Quick answers
- Which hospitals does Sandy Oh work at?
- Medicare's official clinician data lists Sandy Oh at 5 hospitals: Advocate Lutheran General Hospital, Alexian Brothers Medical Center 1, Northshore University Healthsystem - Evanston Hospital, Northwest Community Hospital 1 and Northwestern Medicine Central Dupage Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Sandy Oh see patients?
- Medicare's clinician data lists 1 practice location in Arlington Heights, IL. Call before your visit to confirm the address.
- What is Sandy Oh's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Sandy Oh accept Medicare assignment?
- Yes. Medicare's clinician data says Sandy 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.
- What is the phone number for Sandy Oh?
- (847) 797-8900, as listed in official Medicare / NPI Registry data.
- What is Sandy Oh's NPI number?
- 1851325203. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Sandy Oh works
Medicare's Facility Affiliation Data lists Sandy Oh at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Lutheran General HospitalPark Ridge, IL · Acute Care Hospital · CCN 140223
- Alexian Brothers Medical Center 1Elk Grove Village, IL · Acute Care Hospital · CCN 140258
- Northshore University Healthsystem - Evanston HospitalEvanston, IL · Acute Care Hospital · CCN 140010
- Northwest Community Hospital 1Arlington Heights, IL · Acute Care Hospital · CCN 140252
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
Practice locations
Addresses where Sandy Oh is enrolled with Medicare (CMS data updated 2026-10-02).
- 1606 N Arlington Heights RdArlington Heights, IL 60004 (847) 797‑8900
Group practices
Medicare enrollment lists Sandy Oh as a member of this group (CMS data updated 2026-10-02).
- Arlington Heights Internal Medicine SC3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Arlington Heights
Clinicians with the same Medicare primary specialty in Arlington Heights, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 1995 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851325203 |
| 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