
Medical Oncology · Colorectal Cancer · Breast Cancer · Lung Cancer
An D. Nguyen, MD
About An D. Nguyen, MD
An D. Nguyen, MD, is a board-certified medical oncologist with Keck Medicine of USC, splitting his clinical time between the Newport Beach oncology clinic on Old Newport Blvd and the Irvine treatment center on Barranca Parkway.
He cares for patients with breast cancer, lung cancer, and the full range of gastrointestinal malignancies — biliary, colon, esophageal, gastric, liver, pancreatic, and rectal cancers — coordinating treatment with USC Norris Cancer Hospital's multidisciplinary tumor boards in Los Angeles when complex cases call for it.
Dr. Nguyen is fluent in English and Vietnamese and is one of the highest-rated medical oncologists in the Keck network, with patient reviews averaging 4.9 out of 5.
Areas of focus
Breast cancer, gastrointestinal malignancies (biliary, colon, esophagus, gastric, liver, pancreas, rectal), and lung cancer.
Board certifications
- Internal Medicine — American Board of Internal Medicine
- Medical Oncology — American Board of Internal Medicine
Education & training
- Fellowship
- Hematology/Oncology, Cedars-Sinai Medical Center (2001–2004)
- Residency
- Internal Medicine, Albany Medical Center Hospital (1999–2001)
- Internship
- Internal Medicine, Albany Medical Center Hospital (1998–1999)
- Medical school
- Albany Medical College, MD/DPM (1998)
Patient ratings
★ 4.9 / 5
285 ratings · 43 written comments
Ratings sourced from An D. Nguyen, MD's official Keck Medicine of USC profile, where patients consistently rate this provider highly for explaining things clearly, listening carefully, knowing their medical history, showing respect, and spending enough time.
Source: keckmedicine.org — bio, photo, and patient ratings republished for patient-navigation purposes. Cancer Answers OC is an independent patient-navigation resource and is not affiliated with Keck Medicine of USC, USC Norris Comprehensive Cancer Center, or this physician. Bio, photo, and patient ratings are republished from https://www.keckmedicine.org/provider/an-d-nguyen/ for patient-navigation purposes. To request an appointment through Keck directly, call (800) USC-CARE.



