Quick answers
- Which hospitals does Michelle Ong work at?
- Medicare's official clinician data lists Michelle Ong at 2 hospitals: Alton Memorial Hospital and St Lukes Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michelle Ong see patients?
- Medicare's clinician data lists 2 practice locations, including Alton, IL and Chesterfield, MO. Call before your visit to confirm the address.
- What is Michelle Ong's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Michelle Ong accept Medicare assignment?
- Yes. Medicare's clinician data says Michelle Ong 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 Michelle Ong?
- (618) 463-7311, as listed in official Medicare / NPI Registry data.
- What is Michelle Ong's NPI number?
- 1699711804. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michelle Ong works
Medicare's Facility Affiliation Data lists Michelle Ong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alton Memorial HospitalAlton, IL · Acute Care Hospital · CCN 140002
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · CCN 260179
Practice locations
Addresses where Michelle Ong is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Memorial DrAlton, IL 62002 (618) 463‑7311
- 232 S Woods Mill RdChesterfield, MO 63017 (314) 434‑1500
Group practices
Medicare enrollment lists Michelle Ong as a member of these groups (CMS data updated 2026-10-02).
- Southeastern Emergency Physicians of Memphis LLC94 clinicians in the group
- Emergency Physicians of St Lukes LLC61 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Alton
Clinicians with the same Medicare primary specialty in Alton, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1699711804 |
| 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