Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Andrew Lam-Dinh Nguyen, MD

Individual provider Emergency Medicine Physician · NPI 1659021269

Andrew Lam-Dinh Nguyen, MD practises Emergency Medicine in San Dimas, California. Graduated from State University of New York at Stony Brook, School of Medicine in 2022, 4 years ago. Practices with Orange County Emergency Medical Associates Inc, a 10-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
4
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
CA
In the registry since
2022
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

1350 W Covina Blvd
San Dimas, CA 91773-3245
Phone: (909) 599-6811
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 7901 Walker St, La Palma, CA 90623-1722 — (714) 670-7400

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence A201270 (CA)

Record details

NPI number1659021269
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 26, 2022
Last updated in NPPESJune 26, 2025
Certification dateJune 26, 2025

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 2022 (4 years in practice)
Group practice Orange County Emergency Medical Associates Inc — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of nail tissue 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Orange County Emergency Medical Associates Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 10 clinicians in the practice; 1 are shown here.

Other providers in San Dimas