Individual provider · Type 1 NPI

Theresa Thanh Ngoc Nguyen, MD

Internal Medicine Physician · Santa Ana, CA

NPI number 1003893801 Active

Practice location

5030 Westminster Ave
Santa Ana, CA 92703-1151

Fax (657) 251-0494

Specialties and licenses

Taxonomy	Code	License
Internal Medicine Physician Primary	207R00000X	A61129 (CA)

Internal Medicine Physician: A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medi…

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About NPI 1003893801

Theresa Thanh Ngoc Nguyen, MD's National Provider Identifier is 1003893801, issued on Dec 22, 2005. The primary taxonomy on file is Internal Medicine Physician (207R00000X), and the practice location is in Santa Ana, CA. The record was last updated on Jul 20, 2026.