Oanh Nguyen, MD, MAS

Photo of Oanh Nguyen, MD, MAS
Title(s)Associate Professor, Medicine
SchoolSchool of Medicine
PronounsShe/Her/Hers
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    I am a hospital medicine physician, health services researcher, and Division Chief of Hospital Medicine at Zuckerberg San Francisco General Hospital. Throughout my career, I have been interested in one fundamental question:

    How can we build healthcare organizations where every patient receives excellent care, not by chance, but by design?

    Every patient deserves excellent care, but delivering it consistently depends on more than excellent clinicians. It also depends on the organizations in which they work. The systems, teams, culture, and learning environments surrounding clinicians profoundly shape the care they are able to deliver. Understanding how healthcare organizations create those conditions has become the central focus of my work.

    Public institutions and academic safety-net hospitals have shaped that perspective throughout my career. From my residency and early faculty years at UT Southwestern and Parkland Hospital in Dallas to my faculty career at UCSF and Zuckerberg San Francisco General Hospital, I have seen both the extraordinary possibilities and the persistent shortcomings of the systems we rely on to care for our communities. Those experiences convinced me that improving healthcare requires more than generating new evidence. It requires understanding how organizations create the conditions that make excellent care possible.

    Research alone cannot fully inform this understanding. To answer these questions, I draw on both research and leadership, which gives me an internal perspective of organizational culture, incentives, relationships, and daily decisions. Serving as Division Chief gives me the opportunity to observe organizational change from within, while research provides the tools to study those observations systematically and share lessons beyond a single institution. Together, these perspectives allow me to better understand how healthcare organizations learn, adapt, and create the conditions for clinical excellence.

    My research examines how healthcare organizations translate evidence into routine practice, redesign care for medically and socially complex populations, and develop learning health systems capable of continuous improvement. Across clinical care, healthcare delivery, and health policy, my work is united by a common goal: understanding how healthcare organizations create the conditions that allow clinical excellence to flourish for every patient.

    I believe safety-net hospitals are uniquely positioned to advance this work. Caring for patients with the greatest complexity while operating under the greatest constraints forces these organizations to continually innovate and adapt. The lessons learned in these settings have the potential to strengthen healthcare systems far beyond the safety net.

    My research has been supported by the National Institutes of Health, the Agency for Healthcare Research and Quality, the California Health Care Foundation, and the Chan Zuckerberg Biohub.

    Collapse Biography 
    Collapse education and training
    University of California, Los AngelesBSNeuroscience & political science
    University of California, San DiegoMD
    University of Texas Southwestern Medical Center; Parkland Health & Hospital System, Dallas, TexasInternship & Residency in Internal Medicine
    University of California, San FranciscoMASClinical Research with Specialization in Implementation Science

    Collapse Research 
    Collapse Featured Publications
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    Understanding the Impact of Technology Access and Digital Literacy on Post-Discharge Care and Hospital Readmissions in Adults with Cardiovascular Disease
    NIH R03HL157931Apr 10, 2021 - Mar 31, 2024
    Role: Principal Investigator
    Addressing social vulnerabilities to prevent hospital readmissions in adults with cardiovascular disease
    NIH K23HL133441Aug 18, 2017 - May 31, 2022
    Role: Principal Investigator
    Collapse Clinical Trials

    Collapse Featured Content 

    Collapse Bibliographic 
    Collapse publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Complexity of Diagnosing Volume Overload. JAMA. 2026 Jun 30. Makam AN, Dhaliwal G, Nguyen OK. PMID: 42377953.
      View in: PubMed   Mentions:    Fields:    
    2. Implementation and sustainability of hospital-based harm reduction delivery: a qualitative analysis. Harm Reduct J. 2026 Jun 02; 23(1). Suen LW, Fraimow-Wong L, Baisey T, Knight KR, Thomas L, Giuliano R, Nguyen OK, Martín M. PMID: 42231381; PMCID: PMC13445902.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    3. A self-report measure of digital skills needed to use digital health tools among older adults-the Skills Measurement and Readiness Training for Digital Health (SMART Digital Health) Scale. J Am Med Inform Assoc. 2025 Nov 01; 32(11):1674-1684. Tieu L, Lyles CR, Lyles CR, Kim HC, Luna I, Wong J, Lopez-Solano N, Li J, Yang A, Rodriguez JA, Nguyen OK, Casillas A, De Marchis EH, Stewart AL, Neilands TB, Khoong EC. PMID: 40971609; PMCID: PMC12626212.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    4. Tolerance of Guideline-Directed Medical Therapy-Reply. JAMA Intern Med. 2025 May 01; 185(5):608-609. Ayoola A, Ohringer A, Nguyen OK. PMID: 40163082.
      View in: PubMed   Mentions:    Fields:    
    5. Availability of Cardioprotective Medications for Type 2 Diabetes in the Medicaid Program. Ann Intern Med. 2025 06; 178(6):808-818. Makam AN, Bailey L, Anderson N, Bellitti K, Skinner S, Nguyen OK. PMID: 40258281.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    6. Early Results of Implementing Rapid Methadone Titration for Hospitalized Patients: A Case Series. J Gen Intern Med. 2025 09; 40(13):3104-3110. Martin M, Baisey T, Skinner S, Ly L, Slown K, Harter K, Nguyen OK, Steiger S, Suen LW. PMID: 39804553; PMCID: PMC12508316.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    7. Treatment of Inpatient Opioid Withdrawal with Short-Acting Full Agonist Opioids at a Safety-Net Hospital. J Gen Intern Med. 2025 09; 40(12):2890-2895. Steiner G, Suen LW, Martin M, Skinner S, Crouch P, Nguyen OK, Slown K, Logan A. PMID: 39762677; PMCID: PMC12463741.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    8. Disparities in Use of Novel Diabetes Medications by Insurance: A Nationally Representative Cohort Study. J Gen Intern Med. 2024 11; 39(15):2987-2994. Bepo L, Nguyen OK, Makam AN. PMID: 39085578; PMCID: PMC11576692.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    9. Provision of digital devices and internet connectivity to improve synchronous telemedicine access in the U.S.: a systematic scoping review. Front Digit Health. 2024; 6:1408170. Bell J, Gottlieb LM, Lyles CR, Lyles CR, Nguyen OK, Ackerman SL, De Marchis EH. PMID: 39135634; PMCID: PMC11317370.
      View in: PubMed   Mentions: 3  
    10. Lessons learned from a multi-site collaborative working toward a digital health use screening tool. Front Public Health. 2024; 12:1421129. Hernandez AM, Khoong EC, Kanwar N, Lopez-Solano N, Rodriguez JA, De Marchis E, Nguyen OK, Casillas A. PMID: 39040864; PMCID: PMC11260723.
      View in: PubMed   Mentions: 3     Fields:    Translation:HumansCellsPHPublic Health
    11. Survival, Function, and Cognition After Hospitalization in Long-Term Acute Care Hospitals. JAMA Netw Open. 2024 05 01; 7(5):e2413309. Jain S, Gan S, Nguyen OK, Sudore RL, Steinman MA, Covinsky K, Makam AN. PMID: 38805226; PMCID: PMC11134219.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    12. One-Year Recovery Among Survivors of Prolonged Severe COVID-19: A National Multicenter Cohort. Crit Care Med. 2024 Jul 01; 52(7):e376-e389. Makam AN, Burnfield J, Prettyman E, Nguyen OK, Wu N, Espejo E, Blat C, Boscardin WJ, Ely EW, Jackson JC, Covinsky KE, Votto J, Recovery After Transfer to an LTACH for COVID-19 (RAFT COVID) Study. PMID: 38597793; PMCID: PMC11176028.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    13. Policy in clinical practice: Impact of restoring the 1999 public charge rule on healthcare access for noncitizen immigrants. J Hosp Med. 2024 03; 19(3):215-218. Narayan A, Hong AS, Nguyen OK. PMID: 38358059.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    14. Patient and Staff Perspectives on the Impacts and Challenges of Hospital-Based Harm Reduction. JAMA Netw Open. 2024 02 05; 7(2):e240229. Fraimow-Wong L, Martín M, Thomas L, Giuliano R, Nguyen OK, Knight K, Suen LW. PMID: 38386317; PMCID: PMC10884877.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    15. Visit and Between-Visit Interaction Frequency Before and After COVID-19 Telehealth Implementation. JAMA Netw Open. 2023 09 05; 6(9):e2333944. Nouri S, Lyles CR, Lyles CR, Sherwin EB, Kuznia M, Rubinsky AD, Kemper KE, Nguyen OK, Sarkar U, Schillinger D, Khoong EC. PMID: 37713198; PMCID: PMC10504619.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    16. Policy in clinical practice: Elimination of the buprenorphine "X-waiver". J Hosp Med. 2023 10; 18(10):931-933. Haber LA, Nguyen OK, Taub J, Martin M. PMID: 37545111.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    17. Characterizing patients hospitalized without an acute care indication: A retrospective cohort study. J Hosp Med. 2023 04; 18(4):294-301. Rosenthal MA, Ranji SR, Kanzaria HK, Ortiz GM, Chase J, Chodos AH, Nguyen OK, Rodriguez EG, Makam AN. PMID: 36757173.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    18. Multilevel Determinants of Digital Health Equity: A Literature Synthesis to Advance the Field. Annu Rev Public Health. 2023 04 03; 44:383-405. Lyles CR, Lyles CR, Nguyen OK, Khoong EC, Aguilera A, Sarkar U. PMID: 36525960; PMCID: PMC10329412.
      View in: PubMed   Mentions: 76     Fields:    Translation:Humans
    19. Prevalence and Characteristics of Hospitalizations with Unhealthy Alcohol Use in a Safety-Net Hospital from 2016 to 2018. J Gen Intern Med. 2022 09; 37(12):3211-3213. Martin M, Clement J, Defries T, Makam AN, Nguyen OK. PMID: 35060005; PMCID: PMC9485374.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    20. Sodium-Glucose Cotransporter-2 Inhibitors Versus Glucagon-like Peptide-1 Receptor Agonists and the Risk for Cardiovascular Outcomes in Routine Care Patients With Diabetes Across Categories of Cardiovascular Disease. Ann Intern Med. 2022 01; 175(1):W3. Bepo L, Makam AN, Nguyen OK. PMID: 35038403.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    21. Social Determinants of Health and 30-Day Readmissions Among Adults Hospitalized for Heart Failure in the REGARDS Study. Circ Heart Fail. 2022 01; 15(1):e008409. Sterling MR, Ringel JB, Pinheiro LC, Safford MM, Levitan EB, Phillips E, Brown TM, Nguyen OK, Goyal P. PMID: 34865525; PMCID: PMC8849604.
      View in: PubMed   Mentions: 16     Fields:    Translation:Humans
    22. National Prevalence of Alcohol and Other Substance Use Disorders Among Emergency Department Visits and Hospitalizations: NHAMCS 2014-2018. J Gen Intern Med. 2022 08; 37(10):2420-2428. Suen LW, Makam AN, Snyder HR, Repplinger D, Kushel MB, Martin M, Nguyen OK. PMID: 34518978; PMCID: PMC8436853.
      View in: PubMed   Mentions: 73     Fields:    Translation:Humans
    23. Sociodemographics, Social Vulnerabilities, and Health Factors Associated with Telemedicine Unreadiness Among US Adults. J Gen Intern Med. 2022 05; 37(7):1811-1813. Wray CM, Tang J, Shah S, Nguyen OK, Keyhani S. PMID: 34331214; PMCID: PMC8324431.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    24. Adapting Existing Resources for Serious Illness Communication Skills Training for Internal Medicine Residents. South Med J. 2021 05; 114(5):283-287. Sekar DR, Siropaides CH, Smith LN, Nguyen OK. PMID: 33942112.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    25. Man vs. Machine: Comparing Physician vs. Electronic Health Record-Based Model Predictions for 30-Day Hospital Readmissions. J Gen Intern Med. 2021 09; 36(9):2555-2562. Nguyen OK, Washington C, Clark CR, Miller ME, Patel VA, Halm EA, Makam AN. PMID: 33443694; PMCID: PMC8390613.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    26. Time to ACT: launching an Addiction Care Team (ACT) in an urban safety-net health system. BMJ Open Qual. 2021 01; 10(1). Martin M, Snyder HR, Coffa D, Steiger S, Clement JP, Ranji SR, Azari S, Nguyen OK, Lum PJ. PMID: 33500326; PMCID: PMC7843300.
      View in: PubMed   Mentions: 13     Fields:    Translation:Humans
    27. Comparative effectiveness of long-term acute care hospital versus skilled nursing facility transfer. BMC Health Serv Res. 2020 Nov 11; 20(1):1032. Makam AN, Nguyen OK, Miller ME, Shah SJ, Kapinos KA, Halm EA. PMID: 33176767; PMCID: PMC7656509.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    28. Can we predict early 7-day readmissions using a standard 30-day hospital readmission risk prediction model? BMC Med Inform Decis Mak. 2020 09 15; 20(1):227. Saleh SN, Makam AN, Halm EA, Nguyen OK. PMID: 32933505; PMCID: PMC7493907.
      View in: PubMed   Mentions: 7     Fields:    Translation:Humans
    29. Reply to Comment on: The Clinical Course After Long-Term Acute Care Hospital Admission Among Older Medicare Beneficiaries. J Am Geriatr Soc. 2020 03; 68(3):667-668. Makam AN, Nguyen OK, Halm EA. PMID: 31903543.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    30. The Clinical Course after Long-Term Acute Care Hospital Admission among Older Medicare Beneficiaries. J Am Geriatr Soc. 2019 11; 67(11):2282-2288. Makam AN, Tran T, Miller ME, Xuan L, Nguyen OK, Halm EA. PMID: 31449686.
      View in: PubMed   Mentions: 10     Fields:    Translation:Humans
    31. Evidence-Based Medicine and the American Thoracic Society Guidelines-Reply. JAMA Intern Med. 2019 07 01; 179(7):1004-1005. Schumacher RC, Nguyen OK, Makam AN. PMID: 31260021.
      View in: PubMed   Mentions:    Fields:    
    32. Improving Respiratory Rate Accuracy in the Hospital: A Quality Improvement Initiative. J Hosp Med. 2019 11 01; 14(11):673-677. Keshvani N, Berger K, Gupta A, DePaola S, Nguyen OK, Makam AN. PMID: 31251168; PMCID: PMC6827541.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    33. Comparison of Scheduled vs Emergency-Only Dialysis in Undocumented Immigrants With End-stage Renal Disease-Reply. JAMA Intern Med. 2019 05 01; 179(5):728-729. Nguyen OK, Makam AN. PMID: 31058944.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
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