Quick answers
- Which hospitals does Rachel Armstrong work at?
- Medicare's official clinician data lists Rachel Armstrong at 2 hospitals: Barnes Jewish Hospital and Christian Hospital Northeast. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Rachel Armstrong see patients?
- Medicare's clinician data lists 4 practice locations, including Saint Louis, MO, Saint Peters, MO and O Fallon, MO. Call before your visit to confirm the address.
- What is Rachel Armstrong's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Rachel Armstrong accept Medicare assignment?
- Yes. Medicare's clinician data says Rachel Armstrong 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 Rachel Armstrong?
- (314) 362-9170, as listed in official Medicare / NPI Registry data.
- What is Rachel Armstrong's NPI number?
- 1861919953. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Rachel Armstrong works
Medicare's Facility Affiliation Data lists Rachel Armstrong at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · CCN 260032
- Christian Hospital NortheastSaint Louis, MO · Acute Care Hospital · CCN 260180
Practice locations
Addresses where Rachel Armstrong is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Barnes Hospital PlzSaint Louis, MO 63110 (314) 362‑9170
- 10 Hospital DrSaint Peters, MO 63376 (314) 362‑9123
- 2 Progress Point PkwyO Fallon, MO 63368 (314) 362‑9123
- 400 S Kingshighway BlvdSaint Louis, MO 63110 (314) 454‑7900
Group practices
Medicare enrollment lists Rachel Armstrong as a member of these groups (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
- Washington University Community Specialists LLC105 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Northwestern University Feinberg Medical School |
| Graduation year | 2021 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861919953 |
| 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