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

John T. Duong, MD

Individual provider Internal Medicine Physician · NPI 1356364889

John T. Duong, MD is an Internal Medicine Physician in Long Beach, California. Practices as a sole proprietor and works from 2 locations. Licensed in California.

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

4540 E 7th St
Long Beach, CA 90804-4327
Phone: (562) 344-1150
Fax: (562) 344-1155
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 19191 S Vermont Ave, Torrance, CA 90502-1018 — (310) 354-4221

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A66685 (CA)

Record details

NPI number1356364889
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 25, 2006
Last updated in NPPESJanuary 18, 2026
Certification dateJanuary 18, 2026
Mailing addressPo Box 35380, Las Vegas, NV 89133-5380

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