Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Rachel Elizabeth Armstrong, MD

Individual provider Emergency Medicine Physician · NPI 1861919953

Dr. Rachel Elizabeth Armstrong, MD practises Emergency Medicine in Saint Louis, Missouri. Graduated from Northwestern University Feinberg Medical School in 2021, 5 years ago. Practices with Washington University Community Specialists LLC, a 95-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
5
Trained at
Northwestern University Feinberg Medical School
Licensed in
MO
In the registry since
2017
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1 Barnes Jewish Hospital Plz Dept Emergency Med
Saint Louis, MO 63110-1003
Phone: (314) 362-9123
Fax: (314) 362-0478
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 2024008955 (MO)

Record details

NPI number1861919953
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 29, 2017
Last updated in NPPESApril 15, 2025
Certification dateApril 25, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 2021 (5 years in practice)
Group practice Washington University Community Specialists Llc — 95 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients112
Services billed 182 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Washington University Community Specialists LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 95 clinicians in the practice; 12 are shown here.

Other providers in Saint Louis