Oanh Nguyen, MD, MAS

Associate Professor

Dr. Nguyen is a physician-health services researcher with expertise in epidemiology and implementation science. 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 Action Research Center for Health, 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
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
Publications

  1. Nguyen P, Escalona M, Ryan E, Miller C, Marimuthu MPA, Fairbairn CW, Seligmann W, Chumchim N, Nguyen O, Toffelmier E, Shaffer HB, Sexton JP, Cleland E. A genome assembly of the California poppy, Eschscholzia californica. The Journal of heredity 2025. PMID: 40874558


  2. Benham PM, Cicero C, Burns K, Escalona M, Beraut E, Fairbairn CW, Seligmann WE, Marimuthu MPA, Nguyen O, Chumchim N, Toffelmier E, Nachman MW, Bowie RCK. A Highly Contiguous Genome Assembly for the Wrentit (Chamaea Fasciata), the Sole Representative of the Babbler Radiation in the Americas. The Journal of heredity 2025. PMID: 40910567


  3. Wutthituntisil N, Pedraza-Marrón CDR, DeBiasse MB, Escalona M, Fairbairn C, Marimuthu MPA, Nguyen O, Dawson MN. A reference genome for the rough limpet Lottia scabra, an intertidal species from the northeastern Pacific. The Journal of heredity 2025. PMID: 40874565


  4. McGuire JA, Richmond JQ, Escalona M, Marimuthu MPA, Nguyen O, Sacco S, Beraut E, Toffelmier E, Cooper RD, Westphal M, Fisher RN, Wang IJ, Shaffer HB. Genome Resources-A chromosome-Level genome assembly for the long-nosed leopard lizard, Gambelia wislizenii, the first reference genome for the lizard family crotaphytidae. The Journal of heredity 2025. PMID: 40741976


  5. Martínez-Gómez J, Escalona M, Colicchio JM, Hamm LN, Marimuthu MPA, Nguyen O, Chumchim N, Seligmann W, Meyer RS, Sexton JP, Blackman BK. The reference genome of a Sierra Nevada endemic, the cut-leaved monkeyflower, Mimulus laciniatus (syn. Erythranthe lacinata). The Journal of heredity 2025. PMID: 40874564


  6. Abrecht M, Martin KLM, Speck HP, Escalona M, Sahasrabudhe R, Marimuthu MPA, Nguyen O, Chumchim N, Beraut E, Sacco S, Seligmann W, Fairbairn CW, Miller C, Heath-Heckman E, Toffelmier E, Shaffer HB, Jacobs DK. A Chromosome-Level Genome Assembly for the Beach-Spawning California Grunion, Leuresthes Tenuis. The Journal of heredity 2026. PMID: 41626760


  7. Martínez LT, Escalona M, Toffelmier E, Miller C, Sahasrahbudhe R, Marimuthu MPA, Nguyen O, Chumchim N, Beraut E, Sacco S, Seligmann W, Fairbairn CW, Cooper RD, Shaffer HB, Purcell J, Sachs JL. Chromosome-Level Reference Genome of a Foundational California Native Legume, Acmispon strigosus. The Journal of heredity 2026. PMID: 41615023


  8. Baker HK, Payne CY, Escalona M, Rodzen J, Parmenter S, Barabe RM, Ingel C, Marimuthu MPA, Nguyen O, Chumchim N, Beraut E, Sacco S, Seligmann W, Fairbairn CW, Cooper RD, Miller C, Toffelmier E, Garza JC, Shaffer HB, Rennison DJ, Shurin JB. 'The genome assemblies of the Tui chub, Siphateles bicolor, and Arroyo Chub, Gila orcuttii'. The Journal of heredity 2026. PMID: 41543122


  9. Richmond JQ, Escalona M, Marimuthu MPA, Nguyen O, Sacco S, Beraut E, Toffelmier E, Karin BR, Cooper RD, Fisher RN, Wang IJ, Shaffer HB. A chromosome-level reference genome assembly for Gilbert's skink Plestiodon gilberti. The Journal of heredity 2025. PMID: 40581366


  10. Johns J, Escalona M, Miller C, Chumchim N, Nguyen O, Marimuthu MPA, Sacco S, Fairbairn C, Beraut E, Toffelmier E, Shaffer HB, Hodges S. "A near chromosome-level assembly of the serpentine endemic columbine, Aquilegia eximia". The Journal of heredity 2025. PMID: 40492452


  11. Carlson BJ, DeBiasse MB, Pedraza-Marrón CDR, Escalona M, Chumchim N, Marimuthu MPA, Miller C, Nguyen O, Seligmann WE, Dawson MN. A Reference Genome Assembly for the Pink Volcano Barnacle, Tetraclita Rubescens, Nilsson-Cantell, 1931. The Journal of heredity 2025. PMID: 40704718


  12. MacDonald ZG, Curti JN, Cooper R, Schoville SD, Escalona M, Chumchim N, Fairbairn CW, Toffelmier E, Miller C, Marimuthu MPA, Nguyen O, Seligmann W, Gillespie TW, Shaffer HB. Genome Assembly for the Sierra Nevada Parnassian (Parnassius behrii) and a Brief Review of Butterfly Genome Sizes. The Journal of heredity 2025. PMID: 41400510


  13. McMahan WT, Escalona M, Kenny R, Marimuthu MPA, Nguyen O, Fairbairn CW, Seligmann W, Miller C, Shaffer HB, Still SM, Potter D. "A genome assembly of the California Flannelbush, Fremontodendron californicum". The Journal of heredity 2025. PMID: 41395837


  14. Dorsey BL, Escalona M, Marimuthu MPA, Nguyen O, Chumchim N, Fairbairn CW, Seligmann W, Miller C, Toffelmier E, Shaffer HB, Handley VM. A genome assembly of Douglas' meadowfoam, Limnanthes douglasii R. BR. The Journal of heredity 2025. PMID: 41395841


  15. Barley AJ, Ho DV, Baumann P, Wang IJ, Shaffer HB, Fisher RN, Gray LN, Krabbenhoft TJ, Espinoza RE, Escalona M, Toffelmier E, Sahasrabudhe R, Nguyen O, Fairbairn CW, Beraut E, Thomson RC. Speciation Genomics in the Tiger Whiptail Lizards (Aspidoscelis tigris Complex). Genome biology and evolution 2025. PMID: 41424403


  16. Johns J, Moore M, Escalona M, Miller C, Chumchim N, Nguyen O, Marimuthu MPA, Fairbairn C, Beraut E, Seligmann WE, Sacco S, Toffelmier E, Shaffer HB, Michael TP, Hodges S. A chromosome level genome assembly of the marine flowering plant, Torrey's surfgrass (Phyllospadix torreyi) reveals an exceptionally large Y-chromosome. The Journal of heredity 2025. PMID: 41269242


  17. Wheeler M, Snyder A, Nguyen O, Compton L. Closing the Equity Gap in Hospital-to-Home Care Transitions with Automated Post-Discharge Calls, Text Messages, and Focused Nursing Outreach. Journal of general internal medicine 2025. PMID: 41254422


  18. Amundson KR, Marimuthu MPA, Nguyen O, Sarika K, DeMarco IJ, Phan A, Henry IM, Comai L. Spatial variation in the mutation rate within the plant shoot apical meristem. Proceedings of the National Academy of Sciences of the United States of America 2025. PMID: 41213012


  19. Fawcett S, Escalona M, Marimuthu MPA, Nguyen O, Chumchim N, Beraut E, Seligmann W, Fairbairn CW, Toffelmier E, Miller C, Shaffer HB, Majure LC. A Chromosome-level Genome Assembly of the Beavertail Cactus, Opuntia basilaris. The Journal of heredity 2025. PMID: 40338007


  20. Tieu L, 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. 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. Journal of the American Medical Informatics Association : JAMIA 2025. PMID: 40971609


  21. Wooldridge TB, Escalona M, Perry BW, Enstrom AN, Salih D, Seligmann WE, Sacco S, Moon KL, Sahasrabudhe R, Chumchim N, Nguyen O, Kelley JL, MacPhee RDE, Shapiro B. Chromosome-scale Genomes Show Rapid Diversification and Ancient Gene Flow Among Bear Species. Genome biology and evolution 2025. PMID: 41047635


  22. Rivera MG, Escalona M, Garza JC, Miller C, Beraut E, Fairbairn C, Sacco S, Seligmann WE, Sahasrabudhe R, Nguyen O, Toffelmier E, Shaffer HB, Costa DP, Beltran RS, Meyer RS. Genome assembly and annotation of a deep-diving pinniped, the northern elephant seal (Mirounga angustirostris). The Journal of heredity 2025. PMID: 41147771


  23. Hallas JM, Capel SLR, Escalona M, Nguyen O, Sacco S, Sahasrabudhe R, Seligmann W, Sacks BN, Buchalski MR. A genome assembly for mule deer, Odocoileus hemionus, from southern California. The Journal of heredity 2025. PMID: 41091831


  24. Alves-Lima C, Montecinos G, Escalona M, Calhoun S, Marimuthu M, Nguyen O, Beraut E, Lipzen A, Grigoriev IV, Raimondi P, Nuzhdin S, Alberto F. The reference genome for the northeastern Pacific bull kelp, Nereocystis luetkeana. The Journal of heredity 2025. PMID: 41081732


  25. Linn IJ, Escalona M, Nguyen O, Marimuthu MPA, Chumchim N, Fairbairn CW, Seligmann W, Beraut E, Conroy CJ, Bowie RCK, Nachman MW. A high-quality reference genome for the ornate shrew (Sorex ornatus). The Journal of heredity 2025. PMID: 41042244


  26. Grismer JL, Escalona M, Miller C, Marimuthu MPA, Nguyen O, Beraut E, Sacco S, Toffelmier E, Cooper RD, Wang IJ, Fisher RN, Shaffer HB. Reference genome of the Gophersnake, Pituophis catenifer (Serpentes: Colubridae). The Journal of heredity 2025. PMID: 40319346


  27. Song MJ, Rizzieri YC, Li FW, Freund F, Escalona M, Toffelmier E, Miller C, Shaffer HB, Nguyen O, Marimuthu MPA, Chumchim N, Tribble C, Fairbairn CW, Seligmann W, Rothfels CJ. The genome assembly of the duckweed fern, Azolla caroliniana. The Journal of heredity 2025. PMID: 40251857


  28. Supple MA, Escalona M, Alexandre N, Buchalski MR, Riley SPD, Dellinger JA, Vickers TW, Sahasrabudhe R, Nguyen O, Fairbairn CW, Seligmann WE, Wilmers CC, Shapiro B. A chromosome-level genome assembly of the mountain lion, Puma concolor. The Journal of heredity 2025. PMID: 39506490


  29. Voss ER, Escalona M, Nguyen O, Marimuthu MPA, Chumchim N, Fairbairn CW, Seligmann W, Beraut E, Conroy CJ, Patton JL, Bowie RCK, Nachman MW. A high-quality genome assembly for a desert-adapted rodent, Merriam's kangaroo rat (Dipodomys merriami). The Journal of heredity 2025. PMID: 40243028


  30. Voss ER, Escalona M, Kozak KM, Seligmann W, Fairbairn CW, Nguyen O, Marimuthu MPA, Conroy CJ, Patton JL, Bowie RCK, Nachman MW. De novo genome assembly of a Geomyid rodent, Botta's pocket gopher (Thomomys bottae bottae). The Journal of heredity 2025. PMID: 39188078


  31. González-Ramírez IS, Escalona M, Miller C, Chumchim N, Marimuthu MPA, Nguyen O, Song MJ, Mishler BD. A genome assembly for the California endemic liverwort Calasterella californica. The Journal of heredity 2025. PMID: 39504486


  32. 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 for the Chryxus Arctic (Oeneis chryxus), the highest butterfly in North America. The Journal of heredity 2024. PMID: 39275847


  33. Genetti M, Escalona M, Mirchandani C, Oppenheimer J, Beraut E, Sacco S, Seligmann W, Fairbairn CW, Sahasrabudhe R, Marimuthu MPA, Nguyen O, Chumchim N, Corbett-Detig R. Secrets of the Goo: The genome assembly of the Pacific banana slug, Ariolimax columbianus. The Journal of heredity 2025. PMID: 39849889


  34. Ayoola A, Ohringer A, Nguyen OK. Tolerance of Guideline-Directed Medical Therapy-Reply. JAMA internal medicine 2025. PMID: 40163082


  35. Makam AN, Bailey L, Anderson N, Bellitti K, Skinner S, Nguyen OK. Availability of Cardioprotective Medications for Type 2 Diabetes in the Medicaid Program. Annals of internal medicine 2025. PMID: 40258281


  36. Jacobs DK, Kinziger A, Abrecht M, McCraney WT, Hà BA, Spies BT, Heath-Heckman E, Marimuhtu MPA, Nguyen O, Fairbairn CW, Seligmann WE, Escalona M, Miller C, Shaffer HB. Reference genome for the endangered, genetically subdivided, northern tidewater goby, Eucyclogobius newberryi. The Journal of heredity 2025. PMID: 39367793


  37. Martin M, Baisey T, Skinner S, Ly L, Slown K, Harter K, Nguyen OK, Steiger S, Suen LW. Early Results of Implementing Rapid Methadone Titration for Hospitalized Patients: A Case Series. Journal of general internal medicine 2025. PMID: 39804553


  38. Steiner G, Suen LW, Martin M, Skinner S, Crouch P, Nguyen OK, Slown K, Logan A. Treatment of Inpatient Opioid Withdrawal with Short-Acting Full Agonist Opioids at a Safety-Net Hospital. Journal of general internal medicine 2025. PMID: 39762677


  39. Ayoola A, Ohringer A, Nguyen OK. Guideline-Directed Medical Therapy Intolerance in Heart Failure. JAMA internal medicine 2024. PMID: 39466259


  40. Huang M, Kingan S, Shoue D, Nguyen O, Froenicke L, Galvin B, Lambert C, Khan R, Maheshwari C, Weisz D, Maslen G, Davison H, Aiden EL, Korlach J, Dudchenko O, McDowell MA, Richards S. Improved high quality sand fly assemblies enabled by ultra low input long read sequencing. Scientific data 2024. PMID: 39181902


  41. Chaturvedi S, Escalona M, Marimuthu MPA, Nguyen O, Chumchim N, Fairbairn CW, Seligmann W, Miller C, Shaffer HB, Whiteman NK. A draft reference genome assembly of California Pipevine, Aristolochia californica Torr. The Journal of heredity 2024. PMID: 38616677


  42. 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. A genome assembly of the American black bear, Ursus americanus, from California. The Journal of heredity 2024. PMID: 39008331


  43. Bepo L, Nguyen OK, Makam AN. Disparities in Use of Novel Diabetes Medications by Insurance: A Nationally Representative Cohort Study. Journal of general internal medicine 2024. PMID: 39085578


  44. Bell J, Gottlieb LM, Lyles CR, Nguyen OK, Ackerman SL, De Marchis EH. 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. PMID: 39135634


  45. Hernandez AM, Khoong EC, Kanwar N, Lopez-Solano N, Rodriguez JA, De Marchis E, Nguyen OK, Casillas A. Lessons learned from a multi-site collaborative working toward a digital health use screening tool. Frontiers in public health 2024. PMID: 39040864


  46. 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. A highly contiguous genome assembly for the Yellow Warbler (Setophaga petechia). The Journal of heredity 2024. PMID: 38401156


  47. Jain S, Gan S, Nguyen OK, Sudore RL, Steinman MA, Covinsky K, Makam AN. Survival, Function, and Cognition After Hospitalization in Long-Term Acute Care Hospitals. JAMA network open 2024. PMID: 38805226


  48. 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. One-Year Recovery Among Survivors of Prolonged Severe COVID-19: A National Multicenter Cohort. Critical care medicine 2024. PMID: 38597793


  49. 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. Reference genome of Townsend's big-eared bat, Corynorhinus townsendii. The Journal of heredity 2024. PMID: 38092381


  50. Mead A, Fitz-Gibbon ST, Escalona M, Beraut E, Sacco S, Marimuthu MPA, Nguyen O, Sork VL. The genome assembly of Island Oak (Quercus tomentella), a relictual island tree species. The Journal of heredity 2024. PMID: 38305464


  51. Narayan A, Hong AS, Nguyen OK. Policy in clinical practice: Impact of restoring the 1999 public charge rule on healthcare access for noncitizen immigrants. Journal of hospital medicine 2024. PMID: 38358059


  52. Fraimow-Wong L, Martín M, Thomas L, Giuliano R, Nguyen OK, Knight K, Suen LW. Patient and Staff Perspectives on the Impacts and Challenges of Hospital-Based Harm Reduction. JAMA network open 2024. PMID: 38386317


  53. 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 genome assembly of the Yuma myotis bat, Myotis yumanensis. The Journal of heredity 2024. PMID: 37712349


  54. 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 highly contiguous genome assembly for the pocket mouse Perognathus longimembris longimembris. The Journal of heredity 2024. PMID: 37793045


  55. Chaturvedi S, Escalona M, Marimuthu MPA, Nguyen O, Chumchim N, Fairbairn CW, Seligmann W, Miller C, Bradley Shaffer H, Whiteman NK. A draft reference genome assembly of the Pipevine Swallowtail butterfly, Battus philenor hirsuta. The Journal of heredity 2023. PMID: 37428819


  56. Westeen EP, Escalona M, Holding M, Beraut E, Fairbairn C, Marimuthu MPA, Nguyen O, Perri R, Fisher RN, Toffelmier E, Shaffer HB, Wang IJ. A genome assembly for the southern Pacific rattlesnake, Crotalus oreganus helleri, in the western rattlesnake species complex. The Journal of heredity 2023. PMID: 37493092


  57. Westeen EP, Escalona M, Beraut E, Marimuthu MPA, Nguyen O, 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. PMID: 37688363


  58. DeRaad DA, Escalona M, Benham PM, Marimuthu MPA, Sahasrabudhe RM, Nguyen O, Chumchim N, Beraut E, Fairbairn CW, Seligmann W, Bowie RCK, Cicero C, McCormack JE, Wayne RK. De novo assembly of a chromosome-level reference genome for the California Scrub-Jay, Aphelocoma californica. The Journal of heredity 2023. PMID: 37589384


  59. Adams JN, Escalona M, Marimuthu MPA, Fairbairn CW, Beraut E, Seligmann W, Nguyen O, Chumchim N, Stajich JE. The reference genome assembly of the bright cobblestone lichen, Acarospora socialis. The Journal of heredity 2023. PMID: 37740386


  61. Nouri S, Lyles CR, Sherwin EB, Kuznia M, Rubinsky AD, Kemper KE, Nguyen OK, Sarkar U, Schillinger D, Khoong EC. Visit and Between-Visit Interaction Frequency Before and After COVID-19 Telehealth Implementation. JAMA network open 2023. PMID: 37713198


  62. Benham PM, Cicero C, DeRaad DA, McCormack JE, Wayne RK, Escalona M, Beraut E, Marimuthu MPA, Nguyen O, Nachman MW, Bowie RCK. A highly contiguous reference genome for the Steller's jay (Cyanocitta stelleri). The Journal of heredity 2023. PMID: 37395718


  63. 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. Assembly of the largest squamate reference genome to date: the western fence lizard, Sceloporus occidentalis. The Journal of heredity 2023. PMID: 37335574


  64. McEvoy SL, Lustenhouwer N, Melen MK, Nguyen O, Marimuthu MPA, Chumchim N, Beraut E, Parker IM, Meyer RS. 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. PMID: 37262429


  65. Fitz-Gibbon S, Mead A, O'Donnell S, Li ZZ, Escalona M, Beraut E, Sacco S, Marimuthu MPA, Nguyen O, Sork VL. Reference genome of California walnut, Juglans californica, and resemblance with other genomes in the order Fagales. The Journal of heredity 2023. PMID: 37335172


  66. Haber LA, Nguyen OK, Taub J, Martin M. Policy in clinical practice: Elimination of the buprenorphine "X-waiver". Journal of hospital medicine 2023. PMID: 37545111


  67. Benham PM, Cicero C, Escalona M, Beraut E, Marimuthu MPA, Nguyen O, Nachman MW, Bowie RCK. A highly contiguous genome assembly for the California quail (Callipepla californica). The Journal of heredity 2023. PMID: 36763048


  68. Richmond JQ, McGuire JA, Escalona M, Marimuthu MPA, Nguyen O, Sacco S, Beraut E, Toffelmier E, Fisher RN, Wang IJ, Shaffer HB. Reference genome of an iconic lizard in western North America, Blainville's horned lizard Phrynosoma blainvillii. The Journal of heredity 2023. PMID: 37195437


  69. Hall LA, Wang IJ, Escalona M, Beraut E, Sacco S, Sahasrabudhe R, Nguyen O, Toffelmier E, Shaffer HB, Beissinger SR. Reference genome of the Virginia rail, Rallus limicola. The Journal of heredity 2023. PMID: 37105531


  70. 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. PMID: 37119047


  71. 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. Reference genome of the long-jawed orb-weaver, Tetragnatha versicolor (Araneae: Tetragnathidae). The Journal of heredity 2023. PMID: 37042574


  72. Kieran Blair SR, Schreier A, Escalona M, Finger AJ, Joslin SEK, Sahasrabudhe R, Marimuthu MPA, Nguyen O, Chumchim N, Morris ER, Mangelson H, Hull J. A chromosome-level reference genome for the Versatile Fairy Shrimp, Branchinecta lindahli. The Journal of heredity 2023. PMID: 36223244


  73. Kieran Blair SR, Schreier A, Escalona M, Finger AJ, Joslin SEK, Sahasrabudhe R, Marimuthu MPA, Nguyen O, Chumchim N, Morris ER, Mangelson H, Hull J. A draft reference genome of the Vernal Pool Fairy Shrimp, Branchinecta lynchi. The Journal of heredity 2023. PMID: 36222891


  74. Ballare KM, Escalona M, Barr K, Seligmann W, Sacco S, Sahasrabudhe RM, Nguyen O, Wyckoff C, Smith TB, Shapiro B. A reference genome assembly of the declining tricolored blackbird, Agelaius tricolor. The Journal of heredity 2023. PMID: 36099176


  75. 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 Monkeyface Prickleback, Cebidichthys violaceus. The Journal of heredity 2023. PMID: 36321765


  76. Wright DB, Escalona M, Marimuthu MPA, Sahasrabudhe R, Nguyen O, Sacco S, Beraut E, Toffelmier E, Miller C, Shaffer HB, Bernardi G. Reference genome of the Woolly Sculpin, Clinocottus analis. The Journal of heredity 2023. PMID: 36107748


  77. Rosenthal MA, Ranji SR, Kanzaria HK, Ortiz GM, Chase J, Chodos AH, Nguyen OK, Rodriguez EG, Makam AN. Characterizing patients hospitalized without an acute care indication: A retrospective cohort study. Journal of hospital medicine 2023. PMID: 36757173


  78. Lyles CR, Nguyen OK, Khoong EC, Aguilera A, Sarkar U. Multilevel Determinants of Digital Health Equity: A Literature Synthesis to Advance the Field. Annual review of public health 2022. PMID: 36525960


  79. Lin M, Escalona M, Sahasrabudhe R, Nguyen O, Beraut E, Buchalski MR, Wayne RK. A Reference Genome Assembly of the Bobcat, Lynx rufus. The Journal of heredity 2022. PMID: 35696092


  80. DeBiasse MB, Schiebelhut LM, Escalona M, Beraut E, Fairbairn C, Marimuthu MPA, Nguyen O, Sahasrabudhe R, Dawson MN. A chromosome-level reference genome for the giant pink sea star, Pisaster brevispinus, a species severely impacted by wasting. The Journal of heredity 2022. PMID: 36044245


  81. Bernardi G, Toy JA, Escalona M, Marimuthu MPA, Sahasrabudhe R, Nguyen O, Sacco S, Beraut E, Toffelmier E, Miller C, Shaffer HB. Reference Genome of the Black Surfperch, Embiotoca jacksoni (Embiotocidae, Perciformes), a California Kelp Forest Fish That Lacks a Pelagic Larval Stage. The Journal of heredity 2022. PMID: 35809222


  82. Bernardi G, DeBiasse M, Escalona M, Marimuthu MPA, Nguyen O, Sacco S, Beraut E, Miller C, Toffelmier E, Shaffer HB. Reference Genome of the California Sheephead, Semicossyphus pulcher (Labridae, Perciformes), A Keystone Fish Predator in Kelp Forest Ecosystems. The Journal of heredity 2022. PMID: 35778264


  83. Todd BD, Jenkinson TS, Escalona M, Beraut E, Nguyen O, Sahasrabudhe R, Scott PA, Toffelmier E, Wang IJ, Shaffer HB. Reference Genome of the Northwestern Pond Turtle, Actinemys marmorata. The Journal of heredity 2022. PMID: 35665811


  84. Cornwell BH, Beraut E, Fairbairn C, Nguyen O, Marimuthu MPA, Escalona M, Toffelmier E. Reference genome assembly of the sunburst anemone, Anthopleura sola. The Journal of heredity 2022. PMID: 36074002


  85. Paggeot LX, DeBiasse MB, Escalona M, 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. PMID: 35947871


  86. Wood DA, Richmond JQ, Escalona M, Marimuthu MPA, Nguyen O, Sacco S, Beraut E, Westphal M, Fisher RN, Vandergast AG, Toffelmier E, Wang IJ, Shaffer HB. Reference genome of the California glossy snake, Arizona elegans occidentalis: A declining California Species of Special Concern. The Journal of heredity 2022. PMID: 35939354


  87. Anghel IG, Jacobs SJ, Escalona M, Marimuthu MPA, Fairbairn CW, Beraut E, Nguyen O, Toffelmier E, Shaffer HB, Zapata F. Reference genome of the color polymorphic desert annual plant sandblossoms, Linanthus parryae. The Journal of heredity 2022. PMID: 36107789


  88. Grismer JL, Escalona M, Miller C, Beraut E, Fairbairn CW, Marimuthu MPA, Nguyen O, Toffelmier E, Wang IJ, Shaffer HB. Reference genome of the rubber boa, Charina bottae (Serpentes: Boidae). The Journal of heredity 2022. PMID: 36056886


  89. Kieran Blair SR, Hull J, Escalona M, Finger A, Joslin SEK, Sahasrabudhe R, Marimuthu MPA, Nguyen O, Chumchim N, Morris ER, Velazquez S, Schreier A. The reference genome of the Vernal Pool Tadpole Shrimp, Lepidurus packardi. The Journal of heredity 2022. PMID: 36082700


  90. Huang Y, Escalona M, Morrison G, Marimuthu MPA, Nguyen O, Toffelmier E, Shaffer HB, Litt A. Reference Genome Assembly of the Big Berry Manzanita (Arctostaphylos glauca). The Journal of heredity 2022. PMID: 35575079


  91. Martin M, Clement J, Defries T, Makam AN, Nguyen OK. Prevalence and Characteristics of Hospitalizations with Unhealthy Alcohol Use in a Safety-Net Hospital from 2016 to 2018. TO REMOVE 2022. PMID: 35060005


  93. Sterling MR, Ringel JB, Pinheiro LC, Safford MM, Levitan EB, Phillips E, Brown TM, Nguyen OK, Goyal P. Social Determinants of Health and 30-Day Readmissions Among Adults Hospitalized for Heart Failure in the REGARDS Study. TO REMOVE 2021. PMID: 34865525


  94. Suen LW, Makam AN, Snyder HR, Repplinger D, Kushel MB, Martin M, Nguyen OK. National Prevalence of Alcohol and Other Substance Use Disorders Among Emergency Department Visits and Hospitalizations: NHAMCS 2014-2018. Journal of general internal medicine 2021. PMID: 34518978


  95. Wray CM, Tang J, Shah S, Nguyen OK, Keyhani S. Sociodemographics, Social Vulnerabilities, and Health Factors Associated with Telemedicine Unreadiness Among US Adults. Journal of general internal medicine 2021. PMID: 34331214


  96. Sekar DR, Siropaides CH, Smith LN, Nguyen OK. Adapting Existing Resources for Serious Illness Communication Skills Training for Internal Medicine Residents. Southern medical journal 2021. PMID: 33942112


  97. Nguyen OK, Washington C, Clark CR, Miller ME, Patel VA, Halm EA, Makam AN. Man vs. Machine: Comparing Physician vs. Electronic Health Record-Based Model Predictions for 30-Day Hospital Readmissions. Journal of general internal medicine 2021. PMID: 33443694


  98. Martin M, Snyder HR, Coffa D, Steiger S, Clement JP, Ranji SR, Azari S, Nguyen OK, Lum PJ. Time to ACT: launching an Addiction Care Team (ACT) in an urban safety-net health system. BMJ open quality 2021. PMID: 33500326


  99. Makam AN, Nguyen OK, Miller ME, Shah SJ, Kapinos KA, Halm EA. Comparative effectiveness of long-term acute care hospital versus skilled nursing facility transfer. BMC health services research 2020. PMID: 33176767


  100. Saleh SN, Makam AN, Halm EA, Nguyen OK. Can we predict early 7-day readmissions using a standard 30-day hospital readmission risk prediction model? BMC medical informatics and decision making 2020. PMID: 32933505


  101. Makam AN, Nguyen OK, Halm EA. 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. PMID: 31903543


  102. Makam AN, Tran T, Miller ME, Xuan L, 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. PMID: 31449686


  103. Schumacher RC, Nguyen OK, Makam AN. Evidence-Based Medicine and the American Thoracic Society Guidelines-Reply. JAMA internal medicine 2019. PMID: 31260021


  104. Keshvani N, Berger K, Gupta A, DePaola S, Nguyen OK, Makam AN. Improving Respiratory Rate Accuracy in the Hospital: A Quality Improvement Initiative. Journal of hospital medicine 2019. PMID: 31251168


  106. DeWaters AL, Loria H, Mayo H, Chisty A, Nguyen OK. The Impact of Block Ambulatory Scheduling on Internal Medicine Residencies: a Systematic Review. Journal of general internal medicine 2019. PMID: 30993618


  107. Schumacher RC, Nguyen OK, Desphande K, Makam AN. Evidence-Based Medicine and the American Thoracic Society Clinical Practice Guidelines. JAMA internal medicine 2019. PMID: 30776054


  108. Nguyen OK, Vazquez MA, Charles L, Berger JR, Quiñones H, Fuquay R, Sanders JM, Kapinos KA, Halm EA, 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 2018. PMID: 30575859


  109. Silfee VJ, Lopez-Cepero A, Lemon SC, Estabrook B, Nguyen O, Rosal MC. Recruiting low-income postpartum women into two weight loss interventions: in-person versus Facebook delivery. Translational behavioral medicine 2019. PMID: 29474726


  110. Makam AN, Nguyen OK, Kirby B, Miller ME, Xuan L, Halm EA. Effect of Site-Neutral Payment Policy on Long-Term Acute Care Hospital Use. Journal of the American Geriatrics Society 2018. PMID: 30281783


  111. Makam AN, Nguyen OK, Xuan L, Miller ME, Halm EA. Long-Term Acute Care Hospital Use of Non-Mechanically Ventilated Hospitalized Older Adults. Journal of the American Geriatrics Society 2018. PMID: 30295927


  112. Silfee VJ, Lopez-Cepero A, Lemon SC, Estabrook B, Nguyen O, Wang ML, Rosal MC. Adapting a Behavioral Weight Loss Intervention for Delivery via Facebook: A Pilot Series Among Low-Income Postpartum Women. JMIR formative research 2018. PMID: 30684423


  113. Makam AN, Nguyen OK, Halm EA. Shortcomings of Research Regarding Long-term Acute Care Hospitals and Skilled Nursing Facilities-Reply. Volume 178 of Issue 6. JAMA internal medicine 2018. PMID: 29868749


  115. Nguyen OK, Higashi RT, Makam AN, Mijares JC, Lee SC. The Influence of Financial Strain on Health Decision-Making. Volume 33 of Issue 4. Journal of general internal medicine 2018. PMID: 29340939


  116. Makam AN, Nguyen OK, Xuan L, Miller ME, Goodwin JS, Halm EA. Factors Associated With Variation in Long-term Acute Care Hospital vs Skilled Nursing Facility Use Among Hospitalized Older Adults. Volume 178 of Issue 3. JAMA internal medicine 2018. PMID: 29404575


  117. Smith LN, Makam AN, Darden D, Mayo H, Das SR, Halm EA, Nguyen OK. Acute Myocardial Infarction Readmission Risk Prediction Models: A Systematic Review of Model Performance. Volume 11 of Issue 1. Circulation. Cardiovascular quality and outcomes 2018. PMID: 29321135


  118. Nguyen OK, Makam AN. What Are the Opportunity Costs of Self-Financing Medical Education? Volume 92 of Issue 12. Academic medicine : journal of the Association of American Medical Colleges 2017. PMID: 29210740


  119. Keshvani N, Berger K, Nguyen OK, Makam AN. Roadmap for improving the accuracy of respiratory rate measurements. Volume 27 of Issue 8. BMJ quality & safety 2017. PMID: 29122976


  120. Badawy J, Nguyen OK, Clark C, Halm EA, Makam AN. Is everyone really breathing 20 times a minute? Assessing epidemiology and variation in recorded respiratory rate in hospitalised adults. Volume 26 of Issue 10. BMJ quality & safety 2017. PMID: 28652259


  121. Makam AN, Nguyen OK, Clark C, Halm EA. Incidence, Predictors, and Outcomes of Hospital-Acquired Anemia. Volume 12 of Issue 5. Journal of hospital medicine 2017. PMID: 28459899


  122. Makam AN, Nguyen OK, Clark C, Zhang S, Xie B, Weinreich M, Mortensen EM, Halm EA. Predicting 30-Day Pneumonia Readmissions Using Electronic Health Record Data. Volume 12 of Issue 4. Journal of hospital medicine 2017. PMID: 28411288


  123. Makam AN, Nguyen OK. An Evidence-Based Medicine Approach to Antihyperglycemic Therapy in Diabetes Mellitus to Overcome Overtreatment. Volume 135 of Issue 2. Circulation 2017. PMID: 28069712


  124. Pruitt SL, Leonard T, Xuan L, Amory R, Higashi RT, Nguyen OK, Pezzia C, Swales S. Who Is Food Insecure? Implications for Targeted Recruitment and Outreach, National Health and Nutrition Examination Survey, 2005-2010. Volume 13. Preventing chronic disease 2016. PMID: 27736055


  125. Weinreich M, Nguyen OK, Wang D, Mayo H, Mortensen EM, Halm EA, Makam AN. Predicting the Risk of Readmission in Pneumonia. A Systematic Review of Model Performance. Volume 13 of Issue 9. Annals of the American Thoracic Society 2016. PMID: 27299853


  126. Nguyen OK, Makam AN, Clark C, Zhang S, Xie B, Velasco F, Amarasingham R, Halm EA. Vital Signs Are Still Vital: Instability on Discharge and the Risk of Post-Discharge Adverse Outcomes. Volume 32 of Issue 1. Journal of general internal medicine 2016. PMID: 27503438


  127. Nguyen OK, Halm EA, Makam AN. Further Limitations of the HOSPITAL Score in US Hospitals. Volume 176 of Issue 8. JAMA internal medicine 2016. PMID: 27479675


  128. Makam AN, Nguyen OK. Clinical Criteria to Identify Patients With Sepsis. Volume 316 of Issue 4. JAMA 2016. PMID: 27458952


  129. Fontil V, Bibbins-Domingo K, Nguyen OK, Guzman D, Goldman LE. Management of Hypertension in Primary Care Safety-Net Clinics in the United States: A Comparison of Community Health Centers and Private Physicians' Offices. Volume 52 of Issue 2. Health services research 2016. PMID: 27283354


  130. Nguyen OK, Makam AN, Halm EA. National Use of Safety-Net Clinics for Primary Care among Adults with Non-Medicaid Insurance in the United States. Volume 11 of Issue 3. PloS one 2016. PMID: 27027617


  131. Nguyen OK, Makam AN, Clark C, Zhang S, Xie B, Velasco F, Amarasingham R, Halm EA. Predicting all-cause readmissions using electronic health record data from the entire hospitalization: Model development and comparison. Volume 11 of Issue 7. Journal of hospital medicine 2016. PMID: 26929062


  132. Nguyen OK, Halm EA, Makam AN. Relationship between hospital financial performance and publicly reported outcomes. Volume 11 of Issue 7. Journal of hospital medicine 2016. PMID: 26929094


  133. Makam AN, Nguyen OK, Zhou J, Ottenbacher KJ, Halm EA. Trends in Long-Term Acute Care Hospital Use in Texas from 2002-2011. Volume 2 of Issue 3. Annals of gerontology and geriatric research 2015. PMID: 26702452


  134. Mody P, Nguyen OK. Selecting the Optimal Design for Drug Discontinuation Trials in a Setting of Advanced, Life-Limiting Illness. Volume 175 of Issue 10. JAMA internal medicine 2015. PMID: 26436750


  135. Makam AN, Nguyen OK, Auerbach AD. Diagnostic accuracy and effectiveness of automated electronic sepsis alert systems: A systematic review. Volume 10 of Issue 6. Journal of hospital medicine 2015. PMID: 25758641


  136. Makam AN, Nguyen OK. Use of cardiac biomarker testing in the emergency department. Volume 175 of Issue 1. JAMA internal medicine 2015. PMID: 25401720


  137. Nguyen OK, Kruger J, Greysen SR, Lyndon A, Goldman LE. Understanding how to improve collaboration between hospitals and primary care in postdischarge care transitions: a qualitative study of primary care leaders' perspectives. Volume 9 of Issue 11. Journal of hospital medicine 2014. PMID: 25211608


  138. Nguyen OK, Chan CV, Makam A, Stieglitz H, Amarasingham R. Envisioning a social-health information exchange as a platform to support a patient-centered medical neighborhood: a feasibility study. Volume 30 of Issue 1. Journal of general internal medicine 2014. PMID: 25092009


  139. Nguyen OK, Tang N, Hillman JM, Gonzales R. What's cost got to do with it? Association between hospital costs and frequency of admissions among "high users" of hospital care. Volume 8 of Issue 12. Journal of hospital medicine 2013. PMID: 24173680


  140. Makam AN, Nguyen OK, Moore B, Ma Y, Amarasingham R. Identifying patients with diabetes and the earliest date of diagnosis in real time: an electronic health record case-finding algorithm. Volume 13. BMC medical informatics and decision making 2013. PMID: 23915139


  141. Rennke S, Nguyen OK, Shoeb MH, Magan Y, Wachter RM, Ranji SR. Hospital-initiated transitional care interventions as a patient safety strategy: a systematic review. Annals of internal medicine 2013. PMID: 23460101


  142. Cepeda C, André VM, Flores-Hernández J, Nguyen OK, Wu N, Klapstein GJ, Nguyen S, Koh S, Vinters HV, Levine MS, Mathern GW. Pediatric cortical dysplasia: correlations between neuroimaging, electrophysiology and location of cytomegalic neurons and balloon cells and glutamate/GABA synaptic circuits. Developmental neuroscience 2005. PMID: 15886485


  143. Cepeda C, Starling AJ, Wu N, Nguyen OK, Uzgil B, Soda T, André VM, Ariano MA, Levine MS. Increased GABAergic function in mouse models of Huntington's disease: reversal by BDNF. Journal of neuroscience research 2004. PMID: 15505789


  144. Scott MR, Safar J, Telling G, Nguyen O, Groth D, Torchia M, Koehler R, Tremblay P, Walther D, Cohen FE, DeArmond SJ, Prusiner SB. 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. PMID: 9405603