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

Diem-Tran Isabelle Nguyen, MD

Individual provider Allergy & Immunology Physician · NPI 1215498761

Diem-Tran Isabelle Nguyen, MD is an Allergy & Immunology Physician in Orange, California. Practices as a sole proprietor and works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2019
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

725 W La Veta Ave Ste 100
Orange, CA 92868-4445
Phone: (714) 633-6363
Fax: (714) 633-0178
Show map & directions

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

Additional practice locations (1)

  • One Baylor Plaza, Bcm 320, Houston, TX 77030 — (832) 824-1170

Specialties & licences

Allergy & Immunology Physician (primary) Taxonomy 207K00000X · Licence A194587 (CA)

Record details

NPI number1215498761
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 27, 2019
Last updated in NPPESJune 24, 2024
Certification dateJune 24, 2024

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