Quick answers
- Which hospitals does Thomas H. Oh work at?
- Medicare's official clinician data lists Thomas H. Oh at 4 hospitals: Adventist Health St Helena, Edward Hospital, Midwest Medical Center and Sonoma Valley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas H. Oh see patients?
- Medicare's clinician data lists 6 practice locations, including Galena, IL, Saint Helena, CA and Napa, CA. Call before your visit to confirm the address.
- What is Thomas H. Oh's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Thomas H. Oh accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas 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.
- What is the phone number for Thomas H. Oh?
- (815) 777-1340, as listed in official Medicare / NPI Registry data.
- What is Thomas H. Oh's NPI number?
- 1033275276. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas H. Oh works
Medicare's Facility Affiliation Data lists Thomas H. Oh at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health St HelenaSaint Helena, CA · Acute Care Hospital · CCN 050013
- Edward HospitalNaperville, IL · Acute Care Hospital · CCN 140231
- Midwest Medical CenterGalena, IL · Critical Access Hospital · CCN 141302
- Sonoma Valley HospitalSonoma, CA · Acute Care Hospital · CCN 050090
Practice locations
Addresses where Thomas H. Oh is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1 Medical Ctr DrGalena, IL 61036 (815) 777‑1340
- 10 Woodland RdSaint Helena, CA 94574 (707) 963‑3611
- 1000 Trancas StNapa, CA 94558 (707) 257‑4014
- 130 N Weber Rd, Suite 108Bolingbrook, IL 60440 (630) 646‑5770
- 347 Andrieux StSonoma, CA 95476 (707) 935‑5000
Group practices
Medicare enrollment lists Thomas H. Oh as a member of these groups (CMS data updated 2026-10-02).
- Edward Hospital96 clinicians in the group
- Pacific Redwood Medical Group Inc58 clinicians in the group
- Midwest Medical Center36 clinicians in the group
- Napa Valley Emergency Medical Group19 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Galena
Clinicians with the same Medicare primary specialty in Galena, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033275276 |
| 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