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

J Duc Ngoc Nguyen, MD

Individual provider Internal Medicine Physician · NPI 1427018456

J Duc Ngoc Nguyen, MD is an Internal Medicine Physician in Fontana, California. Licensed in California. Registered with an NPI since 2006.

Licensed in
CA
In the registry since
2006
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

8110 Mango Ave Ste 104
Fontana, CA 92335-3603
Phone: (909) 822-1164
Fax: (909) 357-2235
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A62436 (CA)

Record details

NPI number1427018456
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 24, 2006
Last updated in NPPESMay 5, 2014

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