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

Individual provider Emergency Medicine Physician · NPI 1154852218

Weyjuin Eric Chao, MD practises Emergency Medicine in South el Monte, California. Graduated from New York University School of Medicine in 2017, 9 years ago. Practices with Faculty Physicians and Surgeons of Llusm, a 1,308-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
9
Trained at
New York University School of Medicine
Licensed in
CA
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

1701 Santa Anita Ave
South el Monte, CA 91733-3411
Phone: (626) 579-7777
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1 Gustave L Levy Pl, New York, NY 10029-6504 — (212) 824-8069

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A172222 (CA)

Record details

NPI number1154852218
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 21, 2017
Last updated in NPPESJuly 6, 2021
Certification dateJuly 6, 2021

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolNEW YORK UNIVERSITY SCHOOL OF MEDICINE
Graduated 2017 (9 years in practice)
Group practice Faculty Physicians And Surgeons Of Llusm — 1308 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 patients362
Services billed 533 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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 Faculty Physicians and Surgeons of Llusm

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1308 clinicians in the practice; 12 are shown here.

Other providers in South el Monte