Rachel Elizabeth Armstrong, MD
NPI 1861919953ActiveIndividual· Emergency Medicine· Saint Louis, MO
Emergency Medicine (MD) in Saint Louis, Missouri, trained at Northwestern University Feinberg Medical School (class of 2021). 112 Medicare patients in 2024, $13,747 paid; nearly all of their 73 Part D prescriptions were generic (96%).
Overview
| NPI | 1861919953 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 29, 2017 |
| Last updated in NPPES | Apr 15, 2025 |
| Certified by provider | Apr 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | 2024008955 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Emergency Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 112 |
|---|---|
| Services billed | 182 across 15 procedure codes |
| Paid by Medicare | $13,747 |
Part D prescriptions in 2024
| Prescriptions (claims) | 73 · 73 30-day fills |
|---|---|
| Patients | 54 |
| Total drug cost | $482.11 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Northwestern University Feinberg Medical School |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Emergency Medicine |
Medical groups
- Washington UniversitySaint Louis, MO · 3,029 clinicians
- Washington University Community Specialists LLCSaint Louis, MO · 105 clinicians
Hospital affiliations
- Barnes Jewish HospitalSaint Louis, MO
- Christian Hospital NortheastSaint Louis, MO
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 439 emergency medicine physicians in Saint Louis · All emergency medicine physicians in Missouri