Oanh Nguyen, MD, MAS, is originally from Southern California. Drawn by the opportunity to integrate strong clinical training with caring for the underserved in an academic setting, she completed her internal medicine residency at UT Southwestern and Parkland Health and Hospital System.  Following residency, she completed the Primary Care Research Fellowship at the University of California, San Francisco. 

Dr. Nguyen brings to UT Southwestern a strong background in health services research, with training in clinical epidemiology, biostatistics, and implementation and dissemination sciences.  She currently specializes in internal medicine, with a focus on patient-centered care across both the inpatient and outpatient settings. She is also an investigator in the AHRQ-funded UT Southwestern Center for Patient-Centered Outcomes Research, where her current projects focus on developing strategies to predict, understanding, and prevent hospital readmissions. 

She is highly committed to improving understanding and application of evidence-based medicine among trainees, and serves as one of the faculty co-directors of the internal medicine resident journal club. Outside of medicine, she is a food enthusiast, an avid reader, and an aspiring cyclist, hiker and traveler.


Medical School
University of California, San Diego Medical Center (2007)
University of Texas Southwestern Medical School (2010), Internal Medicine
Graduate School
University of California at San Francisco (2013), Clinical Research
Research Fellowship
UCSF/San Francisco General Hospital (2013), Primary Care

Research Interest

  • Care coordination for individuals with complex chronic illness
  • Epidemiology, outcomes, and health services research
  • Evidence-based medicine
  • High-value health care - cost, quality, and appropriateness
  • Hospital readmissions and care transitions from hospital to home
  • Implementation and dissemination science
  • Optimizing care delivery for underserved populations
  • Understanding the effect of social determinants on health care utilization


Featured Publications LegendFeatured Publications

Diagnostic accuracy and effectiveness of automated electronic sepsis alert systems: A systematic review.
Makam AN, Nguyen OK, Auerbach AD J Hosp Med 2015 Mar
Use of Cardiac Biomarker Testing in the Emergency Department.
Makam AN, Nguyen OK JAMA Intern Med 2014 Nov
Understanding how to improve collaboration between hospitals and primary care in postdischarge care transitions: A qualitative study of primary care leaders' perspectives.
Nguyen OK, Kruger J, Greysen SR, Lyndon A, Goldman LE J Hosp Med 2014 Sep
Envisioning a Social-Health Information Exchange as a Platform to Support a Patient-Centered Medical Neighborhood: A Feasibility Study.
Nguyen OK, Chan CV, Makam A, Stieglitz H, Amarasingham R J Gen Intern Med 2014 Aug
What's cost got to do with it? Association between hospital costs and frequency of admissions among "high users" of hospital care.
Nguyen OK, Tang N, Hillman JM, Gonzales R J Hosp Med 2013 Dec 8 12 665-71
Hospital-initiated transitional care interventions as a patient safety strategy: a systematic review.
Rennke S, Nguyen OK, Shoeb MH, Magan Y, Wachter RM, Ranji SR Ann. Intern. Med. 2013 Mar 158 5 Pt 2 433-40
Identifying patients with diabetes and the earliest date of diagnosis in real time: an electronic health record case-finding algorithm.
Makam AN, Nguyen OK, Moore B, Ma Y, Amarasingham R BMC Med Inform Decis Mak 2013 13 81

Honors & Awards

  • Best Research Poster Finalist
    Society of Hospital Medicine (2015)
  • Hamolsky Award Finalist
    Best research presentation by junior faculty, SGIM Annual Meeting (2015)
  • NCATS/NIH KL2 Clinical Scholars
    NIH-funded mentored career development program scholar (2015-2017)
  • Presidential Poster Award Finalist
    Best research poster, American Geriatric Society National Meeting (2015)
  • Lipkin Award Finalist
    Best research presentation by a trainee, SGIM Annual Meeting (2012)

Professional Associations/Affiliations

  • American Geriatric Society (2015)
  • Society of General Internal Medicine (2010)