Oanh Nguyen, MD, MAS
Associate Professor
Medicine
School of Medicine
Dr. Nguyen is a physician-health services researcher with expertise in epidemiology and implementation science.
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Her research portfolio focuses on understanding how social and structural determinants of health affect care delivery and outcomes for people from underserved and historically marginalized communities, and on how to overcome these factors through interventions embedded in healthcare systems and/or health care policy.
As a practicing hospital medicine physician and a safety-net hospitalist researcher, she has studied these issues primarily through the lens of hospitalization and hospital readmissions in safety-net settings. Spending on hospital care accounts for 31% of ~$1.3 trillion of annual U.S. health care spending. Reducing 30-day hospital readmissions is a priority because hospitals are financially penalized and because readmissions are frequent (occurring in 1 of 5 hospitalized patients), costly, and expose patients to increased potential harms of hospitalization including adverse drug events, hospital-acquired disability, and increased mortality. Over the past decade, there has been increasing recognition that frequent readmissions may also be a marker for increased clinical severity and social risk factors in certain populations, particularly those who receive care in safety-net settings. Her work to date has focused on understanding the influence of social determinants of health and social risk factors on readmissions and post-hospital recovery, and on developing potential interventions to address these needs to optimize post-hospital recovery.
Dr. Nguyen holds affiliations in the UCSF Center for Vulnerable Populations, Benioff Homelessness and Housing Initiative, Social Interventions Research and Evaluation Network, Institute for Health Policy Studies, and PRISE Center. Her work is supported by the National Heart, Lung, and Blood Institute, the California Health Care Foundation. She has been recognized locally and nationally for her research, receiving the ZSFG Outstanding Junior Investigator Award in 2019 and the Society of Hospital Medicine Junior Investigator Award in 2019). She currently serves as the UCSF PRISE Center Program Director for Hospital Care, was formerly a deputy editor at the Journal of General Internal Medicine, and currently serves as deputy editor for the Journal of Hospital Medicine. In 2022, she was named a Chan Zuckerberg Biohub Investigator, an independent nonprofit research initiative that empowers scientists to pursue high-risk and innovative scientific research.
Education & Training
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- BS Neuroscience & political science University of California, Los Angeles
- MD University of California, San Diego
- MAS Clinical Research with Specialization in Implementation Science University of California, San Francisco
- Internship & Residency in Internal Medicine University of Texas Southwestern Medical Center; Parkland Health & Hospital System
Websites
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- @@OanhKieuNguyen on Twitter (twitter.com)
Grants and Projects
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Publications (87)
Top publication keywords:
EcosystemInternal MedicineUndocumented ImmigrantsSafety-net ProvidersMedicarePatient ReadmissionElectronic Health RecordsTexasPatient DischargeHospitalsGenomeHospitalizationPovertyFinancial Management, HospitalOrgan Dysfunction Scores
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Predicting 30-Day Hospital Readmissions in Acute Myocardial Infarction: The AMI "READMITS" (Renal Function, Elevated Brain Natriuretic Peptide, Age, Diabetes Mellitus, Nonmale Sex, Intervention with Timely Percutaneous Coronary Intervention, and Low Systolic Blood Pressure) Score.
Journal of the American Heart Association 2018 Nguyen OK, Makam AN, Clark C, Zhang S, Das SR, Halm EA -
The Influence of Financial Strain on Health Decision-Making.
Journal of general internal medicine 2018 Nguyen OK, Higashi RT, Makam AN, Mijares JC, Lee SC -
An Evidence-Based Medicine Approach to Antihyperglycemic Therapy in Diabetes Mellitus to Overcome Overtreatment.
Circulation 2017 Makam AN, Nguyen OK -
Vital Signs Are Still Vital: Instability on Discharge and the Risk of Post-Discharge Adverse Outcomes.
Journal of general internal medicine 2016 Nguyen OK, Makam AN, Clark C, Zhang S, Xie B, Velasco F, Amarasingham R, Halm EA -
Envisioning a social-health information exchange as a platform to support a patient-centered medical neighborhood: a feasibility study.
Journal of general internal medicine 2014 Nguyen OK, Chan CV, Makam A, Stieglitz H, Amarasingham R -
What's cost got to do with it? Association between hospital costs and frequency of admissions among "high users" of hospital care.
Journal of hospital medicine 2013 Nguyen OK, Tang N, Hillman JM, Gonzales R
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Guideline-Directed Medical Therapy Intolerance in Heart Failure.
JAMA internal medicine 2024 Ayoola A, Ohringer A, Nguyen OK -
A genome assembly for the Chryxus Arctic (Oeneis chryxus), the highest butterfly in North America.
The Journal of heredity 2024 MacDonald ZG, Schoville S, Escalona M, Marimuthu MPA, Nguyen O, Chumchim N, Fairbairn CW, Seligmann W, Toffelmier E, Gillespie T, Shaffer HB -
A genome assembly of the American black bear, Ursus americanus, from California.
The Journal of heredity 2024 Supple MA, Escalona M, Adkins J, Buchalski MR, Alexandre N, Sahasrabudhe RM, Nguyen O, Sacco S, Fairbairn C, Beraut E, Seligmann W, Green RE, Meredith E, Shapiro B -
Disparities in Use of Novel Diabetes Medications by Insurance: A Nationally Representative Cohort Study.
Journal of general internal medicine 2024 Bepo L, Nguyen OK, Makam AN -
Provision of digital devices and internet connectivity to improve synchronous telemedicine access in the U.S.: a systematic scoping review.
Frontiers in digital health 2024 Bell J, Gottlieb LM, Lyles CR, Nguyen OK, Ackerman SL, De Marchis EH -
Lessons learned from a multi-site collaborative working toward a digital health use screening tool.
Frontiers in public health 2024 Hernandez AM, Khoong EC, Kanwar N, Lopez-Solano N, Rodriguez JA, De Marchis E, Nguyen OK, Casillas A -
A highly contiguous genome assembly for the Yellow Warbler (Setophaga petechia).
The Journal of heredity 2024 Tsai WLE, Escalona M, Garrett KL, Terrill RS, Sahasrabudhe R, Nguyen O, Beraut E, Seligmann W, Fairbairn CW, Harrigan RJ, McCormack JE, Alfaro ME, Smith TB, Bay RA -
Survival, Function, and Cognition After Hospitalization in Long-Term Acute Care Hospitals.
JAMA network open 2024 Jain S, Gan S, Nguyen OK, Sudore RL, Steinman MA, Covinsky K, Makam AN -
One-Year Recovery Among Survivors of Prolonged Severe COVID-19: A National Multicenter Cohort.
Critical care medicine 2024 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 -
Reference genome of Townsend's big-eared bat, Corynorhinus townsendii.
The Journal of heredity 2024 Capel SLR, Hamilton NM, Fraser D, Escalona M, Nguyen O, Sacco S, Sahasrabudhe R, Seligmann W, Vazquez JM, Sudmant PH, Morrison ML, Wayne RK, Buchalski MR -
The genome assembly of Island Oak (Quercus tomentella), a relictual island tree species.
The Journal of heredity 2024 Mead A, Fitz-Gibbon ST, Escalona M, Beraut E, Sacco S, Marimuthu MPA, Nguyen O, Sork VL -
Policy in clinical practice: Impact of restoring the 1999 public charge rule on healthcare access for noncitizen immigrants.
Journal of hospital medicine 2024 Narayan A, Hong AS, Nguyen OK -
Patient and Staff Perspectives on the Impacts and Challenges of Hospital-Based Harm Reduction.
JAMA network open 2024 Fraimow-Wong L, Martín M, Thomas L, Giuliano R, Nguyen OK, Knight K, Suen LW -
A genome assembly of the Yuma myotis bat, Myotis yumanensis.
The Journal of heredity 2024 Curti JN, Fraser D, Escalona M, Fairbairn CW, Sacco S, Sahasrabudhe R, Nguyen O, Seligmann W, Sudmant PH, Toffelmier E, Vazquez JM, Wayne R, Shaffer HB, Buchalski MR -
A highly contiguous genome assembly for the pocket mouse Perognathus longimembris longimembris.
The Journal of heredity 2024 Kozak KM, Escalona M, Chumchim N, Fairbairn C, Marimuthu MPA, Nguyen O, Sahasrabudhe R, Seligmann W, Conroy C, Patton JL, Bowie RCK, Nachman MW -
A genome assembly for the southern Pacific rattlesnake, Crotalus oreganus helleri, in the western rattlesnake species complex.
The Journal of heredity 2023 Westeen EP, Escalona M, Holding ML, Beraut E, Fairbairn C, Marimuthu MPA, Nguyen O, Perri R, Fisher RN, Toffelmier E, Shaffer HB, Wang IJ -
A reference genome assembly for the continentally distributed ring-necked snake, Diadophis punctatus.
The Journal of heredity 2023 Westeen EP, Escalona M, Beraut E, Marimuthu MPA, Nguyen O, Fisher RN, Toffelmier E, Shaffer HB, Wang IJ -
The reference genome assembly of the bright cobblestone lichen, Acarospora socialis.
The Journal of heredity 2023 Adams JN, Escalona M, Marimuthu MPA, Fairbairn CW, Beraut E, Seligmann W, Nguyen O, Chumchim N, Stajich JE -
Assessing survival outcomes and complication profiles following surgical excision and radiotherapy as interventions for skull base chordoma: a systematic review of operative margins and surgical approaches.
Journal of neuro-oncology 2023 Brown NJ, Gendreau J, Kuo CC, Nguyen O, Yang C, Catapano JS, Lawton MT -
Visit and Between-Visit Interaction Frequency Before and After COVID-19 Telehealth Implementation.
JAMA network open 2023 Nouri S, Lyles CR, Sherwin EB, Kuznia M, Rubinsky AD, Kemper KE, Nguyen OK, Sarkar U, Schillinger D, Khoong EC -
Assembly of the largest squamate reference genome to date: The western fence lizard, Sceloporus occidentalis.
The Journal of heredity 2023 Bishop AP, Westeen EP, Yuan ML, Escalona M, Beraut E, Fairbairn C, Marimuthu MPA, Nguyen O, Chumchim N, Toffelmier E, Fisher RN, Shaffer HB, Wang IJ -
Chromosome-level reference genome of stinkwort, Dittrichia graveolens (L.) Greuter: A resource for studies on invasion, range expansion, and evolutionary adaptation under global change.
The Journal of heredity 2023 McEvoy SL, Lustenhouwer N, Melen MK, Nguyen O, Marimuthu MPA, Chumchim N, Beraut E, Parker IM, Meyer RS -
Reference genome of California walnut, Juglans californica, and resemblance with other genomes in the order Fagales.
The Journal of heredity 2023 Fitz-Gibbon S, Mead A, O'Donnell S, Li ZZ, Escalona M, Beraut E, Sacco S, Marimuthu MPA, Nguyen O, Sork VL -
Policy in clinical practice: Elimination of the buprenorphine "X-waiver".
Journal of hospital medicine 2023 Haber LA, Nguyen OK, Taub J, Martin M -
Reference genome of the Virginia rail, Rallus limicola.
The Journal of heredity 2023 Hall LA, Wang IJ, Escalona M, Beraut E, Sacco S, Sahasrabudhe R, Nguyen O, Toffelmier E, Shaffer HB, Beissinger SR -
Reference genome of the black rail, Laterallus jamaicensis.
The Journal of heredity 2023 Hall LA, Wang IJ, Escalona M, Beraut E, Sacco S, Sahasrabudhe R, Nguyen O, Toffelmier E, Shaffer HB, Beissinger SR -
Reference genome of the long-jawed orb-weaver, Tetragnatha versicolor (Araneae: Tetragnathidae).
The Journal of heredity 2023 Adams SA, Graham NR, Holmquist AJ, Sheffer MM, Steigerwald EC, Sahasrabudhe R, Nguyen O, Beraut E, Fairbairn C, Sacco S, Seligmann W, Escalona M, Shaffer HB, Toffelmier E, Gillespie RG -
A reference genome assembly of the declining tricolored blackbird, Agelaius tricolor.
The Journal of heredity 2023 Ballare KM, Escalona M, Barr K, Seligmann W, Sacco S, Sahasrabudhe RM, Nguyen O, Wyckoff C, Smith TB, Shapiro B -
Reference genome of the Monkeyface Prickleback, Cebidichthys violaceus.
The Journal of heredity 2023 Wright DB, Escalona M, Marimuthu MPA, Sahasrabudhe R, Nguyen O, Sacco S, Beraut E, Toffelmier E, Miller C, Shaffer HB, Bernardi G, German DP -
Reference genome of the Woolly Sculpin, Clinocottus analis.
The Journal of heredity 2023 Wright DB, Escalona M, Marimuthu MPA, Sahasrabudhe R, Nguyen O, Sacco S, Beraut E, Toffelmier E, Miller C, Shaffer HB, Bernardi G -
Characterizing patients hospitalized without an acute care indication: A retrospective cohort study.
Journal of hospital medicine 2023 Rosenthal MA, Ranji SR, Kanzaria HK, Ortiz GM, Chase J, Chodos AH, Nguyen OK, Rodriguez EG, Makam AN -
Multilevel Determinants of Digital Health Equity: A Literature Synthesis to Advance the Field.
Annual review of public health 2022 Lyles CR, Nguyen OK, Khoong EC, Aguilera A, Sarkar U -
A chromosome-level reference genome for the giant pink sea star, Pisaster brevispinus, a species severely impacted by wasting.
The Journal of heredity 2022 DeBiasse MB, Schiebelhut LM, Escalona M, Beraut E, Fairbairn C, Marimuthu MPA, Nguyen O, Sahasrabudhe R, Dawson MN -
Reference genome for the California ribbed mussel, Mytilus californianus, an ecosystem engineer.
The Journal of heredity 2022 Paggeot LX, DeBiasse MB, Escalona M, Fairbairn C, Marimuthu MPA, Nguyen O, Sahasrabudhe R, Dawson MN -
Reference genome of the color polymorphic desert annual plant sandblossoms, Linanthus parryae.
The Journal of heredity 2022 Anghel IG, Jacobs SJ, Escalona M, Marimuthu MPA, Fairbairn CW, Beraut E, Nguyen O, Toffelmier E, Shaffer HB, Zapata F -
Prevalence and Characteristics of Hospitalizations with Unhealthy Alcohol Use in a Safety-Net Hospital from 2016 to 2018.
Journal of general internal medicine 2022 Martin M, Clement J, Defries T, Makam AN, Nguyen OK -
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.
Annals of internal medicine 2022 Bepo L, Makam AN, Nguyen OK -
Social Determinants of Health and 30-Day Readmissions Among Adults Hospitalized for Heart Failure in the REGARDS Study.
Circulation. Heart failure 2021 Sterling MR, Ringel JB, Pinheiro LC, Safford MM, Levitan EB, Phillips E, Brown TM, Nguyen OK, Goyal P -
National Prevalence of Alcohol and Other Substance Use Disorders Among Emergency Department Visits and Hospitalizations: NHAMCS 2014-2018.
Journal of general internal medicine 2021 Suen LW, Makam AN, Snyder HR, Repplinger D, Kushel MB, Martin M, Nguyen OK -
Sociodemographics, Social Vulnerabilities, and Health Factors Associated with Telemedicine Unreadiness Among US Adults.
Journal of general internal medicine 2021 Wray CM, Tang J, Shah S, Nguyen OK, Keyhani S -
Adapting Existing Resources for Serious Illness Communication Skills Training for Internal Medicine Residents.
Southern medical journal 2021 Sekar DR, Siropaides CH, Smith LN, Nguyen OK -
Man vs. Machine: Comparing Physician vs. Electronic Health Record-Based Model Predictions for 30-Day Hospital Readmissions.
Journal of general internal medicine 2021 Nguyen OK, Washington C, Clark CR, Miller ME, Patel VA, Halm EA, Makam AN -
Time to ACT: launching an Addiction Care Team (ACT) in an urban safety-net health system.
BMJ open quality 2021 Martin M, Snyder HR, Coffa D, Steiger S, Clement JP, Ranji SR, Azari S, Nguyen OK, Lum PJ -
Comparative effectiveness of long-term acute care hospital versus skilled nursing facility transfer.
BMC health services research 2020 Makam AN, Nguyen OK, Miller ME, Shah SJ, Kapinos KA, Halm EA -
Can we predict early 7-day readmissions using a standard 30-day hospital readmission risk prediction model?
BMC medical informatics and decision making 2020 Saleh SN, Makam AN, Halm EA, Nguyen OK -
Reply to Comment on: The Clinical Course After Long-Term Acute Care Hospital Admission Among Older Medicare Beneficiaries.
Journal of the American Geriatrics Society 2020 Makam AN, Nguyen OK, Halm EA -
The Clinical Course after Long-Term Acute Care Hospital Admission among Older Medicare Beneficiaries.
Journal of the American Geriatrics Society 2019 Makam AN, Tran T, Miller ME, Xuan L, Nguyen OK, Halm EA -
Evidence-Based Medicine and the American Thoracic Society Guidelines-Reply.
JAMA internal medicine 2019 Schumacher RC, Nguyen OK, Makam AN -
Improving Respiratory Rate Accuracy in the Hospital: A Quality Improvement Initiative.
Journal of hospital medicine 2019 Keshvani N, Berger K, Gupta A, DePaola S, Nguyen OK, Makam AN -
Comparison of Scheduled vs Emergency-Only Dialysis in Undocumented Immigrants With End-stage Renal Disease-Reply.
JAMA internal medicine 2019 Nguyen OK, Makam AN -
The Impact of Block Ambulatory Scheduling on Internal Medicine Residencies: a Systematic Review.
Journal of general internal medicine 2019 DeWaters AL, Loria H, Mayo H, Chisty A, Nguyen OK -
Evidence-Based Medicine and the American Thoracic Society Clinical Practice Guidelines.
JAMA internal medicine 2019 Schumacher RC, Nguyen OK, Deshpande K, Makam AN -
Association of Scheduled vs Emergency-Only Dialysis With Health Outcomes and Costs in Undocumented Immigrants With End-stage Renal Disease.
JAMA internal medicine 2019 Nguyen OK, Vazquez MA, Charles L, Berger JR, Quiñones H, Fuquay R, Sanders JM, Kapinos KA, Halm EA, Makam AN -
Effect of Site-Neutral Payment Policy on Long-Term Acute Care Hospital Use.
Journal of the American Geriatrics Society 2018 Makam AN, Nguyen OK, Kirby B, Miller ME, Xuan L, Halm EA -
Long-Term Acute Care Hospital Use of Non-Mechanically Ventilated Hospitalized Older Adults.
Journal of the American Geriatrics Society 2018 Makam AN, Nguyen OK, Xuan L, Miller ME, Halm EA -
Shortcomings of Research Regarding Long-term Acute Care Hospitals and Skilled Nursing Facilities-Reply.
JAMA internal medicine 2018 Makam AN, Nguyen OK, Halm EA -
Factors Associated With Variation in Long-term Acute Care Hospital vs Skilled Nursing Facility Use Among Hospitalized Older Adults.
JAMA internal medicine 2018 Makam AN, Nguyen OK, Xuan L, Miller ME, Goodwin JS, Halm EA -
Acute Myocardial Infarction Readmission Risk Prediction Models: A Systematic Review of Model Performance.
Circulation. Cardiovascular quality and outcomes 2018 Smith LN, Makam AN, Darden D, Mayo H, Das SR, Halm EA, Nguyen OK -
What Are the Opportunity Costs of Self-Financing Medical Education?
Academic medicine : journal of the Association of American Medical Colleges 2017 Nguyen OK, Makam AN -
Roadmap for improving the accuracy of respiratory rate measurements.
BMJ quality & safety 2017 Keshvani N, Berger K, Nguyen OK, Makam AN -
Is everyone really breathing 20 times a minute? Assessing epidemiology and variation in recorded respiratory rate in hospitalised adults.
BMJ quality & safety 2017 Badawy J, Nguyen OK, Clark C, Halm EA, Makam AN -
Incidence, Predictors, and Outcomes of Hospital-Acquired Anemia.
Journal of hospital medicine 2017 Makam AN, Nguyen OK, Clark C, Halm EA -
Predicting 30-Day Pneumonia Readmissions Using Electronic Health Record Data.
Journal of hospital medicine 2017 Makam AN, Nguyen OK, Clark C, Zhang S, Xie B, Weinreich M, Mortensen EM, Halm EA -
Who Is Food Insecure? Implications for Targeted Recruitment and Outreach, National Health and Nutrition Examination Survey, 2005-2010.
Preventing chronic disease 2016 Pruitt SL, Leonard T, Xuan L, Amory R, Higashi RT, Nguyen OK, Pezzia C, Swales S -
Predicting the Risk of Readmission in Pneumonia. A Systematic Review of Model Performance.
Annals of the American Thoracic Society 2016 Weinreich M, Nguyen OK, Wang D, Mayo H, Mortensen EM, Halm EA, Makam AN -
Further Limitations of the HOSPITAL Score in US Hospitals.
JAMA internal medicine 2016 Nguyen OK, Halm EA, Makam AN -
Clinical Criteria to Identify Patients With Sepsis.
JAMA 2016 Makam AN, Nguyen OK -
Management of Hypertension in Primary Care Safety-Net Clinics in the United States: A Comparison of Community Health Centers and Private Physicians' Offices.
Health services research 2016 Fontil V, Bibbins-Domingo K, Nguyen OK, Guzman D, Goldman LE -
National Use of Safety-Net Clinics for Primary Care among Adults with Non-Medicaid Insurance in the United States.
PloS one 2016 Nguyen OK, Makam AN, Halm EA -
Predicting all-cause readmissions using electronic health record data from the entire hospitalization: Model development and comparison.
Journal of hospital medicine 2016 Nguyen OK, Makam AN, Clark C, Zhang S, Xie B, Velasco F, Amarasingham R, Halm EA -
Relationship between hospital financial performance and publicly reported outcomes.
Journal of hospital medicine 2016 Nguyen OK, Halm EA, Makam AN -
Trends in Long-Term Acute Care Hospital Use in Texas from 2002-2011.
Annals of gerontology and geriatric research 2015 Makam AN, Nguyen OK, Zhou J, Ottenbacher KJ, Halm EA -
Selecting the Optimal Design for Drug Discontinuation Trials in a Setting of Advanced, Life-Limiting Illness.
JAMA internal medicine 2015 Mody P, Nguyen OK -
Diagnostic accuracy and effectiveness of automated electronic sepsis alert systems: A systematic review.
Journal of hospital medicine 2015 Makam AN, Nguyen OK, Auerbach AD -
Use of cardiac biomarker testing in the emergency department.
JAMA internal medicine 2015 Makam AN, Nguyen OK -
Understanding how to improve collaboration between hospitals and primary care in postdischarge care transitions: a qualitative study of primary care leaders' perspectives.
Journal of hospital medicine 2014 Nguyen OK, Kruger J, Greysen SR, Lyndon A, Goldman LE -
Identifying patients with diabetes and the earliest date of diagnosis in real time: an electronic health record case-finding algorithm.
BMC medical informatics and decision making 2013 Makam AN, Nguyen OK, Moore B, Ma Y, Amarasingham R -
Hospital-initiated transitional care interventions as a patient safety strategy: a systematic review.
Annals of internal medicine 2013 Rennke S, Nguyen OK, Shoeb MH, Magan Y, Wachter RM, Ranji SR -
Pediatric cortical dysplasia: correlations between neuroimaging, electrophysiology and location of cytomegalic neurons and balloon cells and glutamate/GABA synaptic circuits.
Developmental neuroscience 2005 Cepeda C, André VM, Flores-Hernández J, Nguyen OK, Wu N, Klapstein GJ, Nguyen S, Koh S, Vinters HV, Levine MS, Mathern GW -
Increased GABAergic function in mouse models of Huntington's disease: reversal by BDNF.
Journal of neuroscience research 2004 Cepeda C, Starling AJ, Wu N, Nguyen OK, Uzgil B, Soda T, André VM, Ariano MA, Levine MS -
Identification of a prion protein epitope modulating transmission of bovine spongiform encephalopathy prions to transgenic mice.
Proceedings of the National Academy of Sciences of the United States of America 1997 Scott MR, Safar J, Telling G, Nguyen O, Groth D, Torchia M, Koehler R, Tremblay P, Walther D, Cohen FE, DeArmond SJ, Prusiner SB