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

Dr. William Hayes Armstrong, MD

Individual provider Emergency Medicine Physician · NPI 1245960293

Dr. William Hayes Armstrong, MD is an Emergency Medicine in Los Angeles, California. Graduated from Virginia Commonwealth University, School of Medicine in 2022, 4 years ago. Practices with Golden State Emergency Physicians Inc, a 24-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California and Virginia.

Years since qualifying
4
Trained at
Virginia Commonwealth University, School of Medicine
Licensed in
CA, VA
In the registry since
2022
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1401 S Grand Ave
Los Angeles, CA 90015-3010
Phone: (213) 748-2411
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • Vcuhs Dept Of Emergency Medicine Residency, Richmond, VA 23298-0401 — (804) 828-0996

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A200987 (CA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence 0116037078 (VA)

Record details

NPI number1245960293
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 13, 2022
Last updated in NPPESJune 29, 2025
Certification dateJune 29, 2025

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolVIRGINIA COMMONWEALTH UNIVERSITY, SCHOOL OF MEDICINE
Graduated 2022 (4 years in practice)
Group practice Golden State Emergency Physicians Inc — 24 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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