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    Renee Hsia, MD

    SchoolUCSF School of Medicine
    DepartmentEmergency Medicine
    Address1001 Potrero Ave, SFGH 3
    San Francisco CA 94110
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      Collapse Biography 
      Collapse Education and Training
      Stanford UniversityResidencyEmergency Medicine2007
      Harvard Medical SchoolM.D.2004
      London School of Economics and London School of Hygiene and Tropical Medicine M.Sc.Health Policy, Planning, and Financing2003
      Princeton UniversityA.B. Woodrow Wilson School of Public and International Affairs1999
      Collapse Awards and Honors
      2014Top Peer Reviewer, Annals of Emergency Medicine
      2014Visiting Professor, Institute of Public Health & Dept of Emergency Medicine, University of Calgary
      2013Visiting Professor Grand Rounds lecture series, Georgetown University Hospital/Washington Hospital
      2013Visiting Scholar, Harvard School of Public Health, Department of Health Policy and Management
      2013Academy for Women in Academic Emergency Medicine (AWAEM) Early Career Faculty Award
      2012 - 2013UCSF Outstanding Resident Teaching Award (Dept of Obstetrics, Gynecology, and Reproductive Sciences)
      2012Emergency Medicine Foundation Health Policy Grant
      2011Society for Academic Emergency Medicine Young Investigator Award
      2010 - 2012Senior Reviewer, Annals of Emergency Medicine
      2009 - 2010UCSF EM Residency 4th Quarter Bedside Teaching Award (SFGH)
      2009Best Paper Award for American College of Emergency Physicians
      2009Stanford/Kaiser Emergency Medicine Residency Annual Attending Bedside Teaching Award
      2009Society for Academic Emergency Medicine Mid-Atlantic Best in Session Presentation
      2009Stanford/Kaiser Emergency Medicine Clinical Teaching Award
      2009Robert Wood Johnson Foundation Physician Faculty Scholars Award
      2008Asian American’s Women’s Alliance 2008 Recognition Award
      2008Stanford/Kaiser Emergency Medicine Quarterly Bedside Teaching Award

      Collapse Overview 
      Collapse Overview
      Renee Y. Hsia, M.D., M.Sc. is a Professor and Director of Health Policy Studies in the Department of Emergency Medicine at UCSF, and also a core faculty member of the UCSF Philip R. Lee Institute for Health Policy Studies (IHPS). She is also a member of the UCSF Center for Healthcare Value and the UCSF Global Health Economics Consortium. She is certified by the American Board of Emergency Medicine. Dr. Hsia speaks Mandarin, Cantonese, Spanish, and French, and provides emergency care to patients with a variety of backgrounds as an attending physician at San Francisco General Hospital & Trauma Center, the only county hospital and trauma center for San Francisco, California.

      Dr. Hsia’s broad research interests are in health services issues related to increasing access to emergency care and regionalization of care. She has been funded by several private foundation grants, including the Robert Wood Johnson Foundation, as well as the National Institutes of Health (National Heart, Lung, and Blood Institute), and the Agency for Healthcare Research and Quality, to study population access to emergency departments and trauma centers in the U.S; the distribution of emergency care across income areas; factors associated with closure of emergency services (both emergency departments and trauma centers); how these closures affect patient outcomes, specifically focusing on patients with acute myocardial infarction, stroke, asthma/COPD, sepsis, and trauma; and the variation of costs and charges in the healthcare system. Her research program also focuses on healthcare costs and financing issues with regard to emergency care. She is also the site PI for several multi-site studies validating trauma triage criteria for different age groups as well as their ability to predict high-risk patients. She has published on these issues in a broad range of journals, including the Journal of the American Medical Association, Health Affairs, American Journal of Public Health, Annals of Emergency Medicine, Academic Emergency Medicine, Journal of Trauma, Archives of Internal Medicine, and Medical Care. Her research has been widely publicized in print media, including the New York Times, the Associated Press, Reuters, USA Today, as well as national network news and radio. Dr. Hsia hopes that this work will help to inform policymakers on the monitoring and oversight of the equitable provision of critical services to patients across the country, and overall improvement of the system's ability to deliver healthcare.

      Collapse Interests
      access to emergency care and trauma centers, specifically for vulnerable populations; injury epidemiology; geographical access to care; relationship of access and patient outcomes for time-sensitive conditions (e.g., acute myocardial infarction); regionalization of emergency care (including ST-elevation myocardial infarction; trauma systems); hospital pricing and variation in charges

      Collapse ORNG Applications 
      Collapse Websites
      Collapse In The News
      Collapse NIH Awarded Grants
      Collapse Global Health
      Collapse Twitter

      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.
      List All   |   Timeline
      1. Fahimi J, Hsia RY. Emergency department observation units: Less than we bargained for? J Hosp Med. 2015 Nov; 10(11):762-3.
        View in: PubMed
      2. Valdovinos E, Le S, Hsia RY. Hospitals' Charity Care: The Authors Reply. Health Aff (Millwood). 2015 Oct 1; 34(10):1799.
        View in: PubMed
      3. Hsia RY, Thind A, Zakariah A, Hicks ER, Mock C. Prehospital and Emergency Care: Updates from the Disease Control Priorities, Version 3. World J Surg. 2015 Sep; 39(9):2161-7.
        View in: PubMed
      4. Valdovinos E, Le S, Hsia RY. In California, Not-For-Profit Hospitals Spent More Operating Expenses On Charity Care Than For-Profit Hospitals Spent. Health Aff (Millwood). 2015 Aug 1; 34(8):1296-303.
        View in: PubMed
      5. Shen YC, Hsia RY. Ambulance Diversion Associated With Reduced Access To Cardiac Technology And Increased One-Year Mortality. Health Aff (Millwood). 2015 Aug 1; 34(8):1273-80.
        View in: PubMed
      6. Friedman AB, Saloner B, Hsia RY. No Place to Call Home--Policies to Reduce ED Use in Medicaid. N Engl J Med. 2015 Jun 18; 372(25):2382-5.
        View in: PubMed
      7. Hsia RY, Nath JB, Baker LC. California emergency department visit rates for medical conditions increased while visit rates for injuries fell, 2005-11. Health Aff (Millwood). 2015 Apr 1; 34(4):621-6.
        View in: PubMed
      8. Choi JC, Hsia RY, Kim AS. Regional availability of mechanical embolectomy for acute ischemic stroke in california, 2009 to 2010. Stroke. 2015 Mar; 46(3):762-8.
        View in: PubMed
      9. Nath JB, Hsia RY. Children's Emergency Department Use for Asthma, 2001-2010. Acad Pediatr. 2015 Mar-Apr; 15(2):225-30.
        View in: PubMed
      10. Carrier E, Khaldun J, Hsia RY. Association between emergency department length of stay and rates of admission to inpatient and observation services. JAMA Intern Med. 2014 Nov 1; 174(11):1843-6.
        View in: PubMed PMC4235758
      11. Le ST, Hsia RY. Timeliness of Care in US Emergency Departments: An Analysis of Newly Released Metrics From the Centers for Medicare & Medicaid Services. JAMA Intern Med. 2014 Nov 1; 174(11):1847-9.
        View in: PubMed
      12. Hsia RY, Nath JB, Baker LC. Emergency department visits by children, adolescents, and young adults in California by insurance status, 2005-2010. JAMA. 2014 Oct 15; 312(15):1587-8.
        View in: PubMed
      13. Pukurdpol P, Wiler JL, Hsia RY, Ginde AA. Association of Medicare and Medicaid insurance with increasing primary care-treatable emergency department visits in the United States. Acad Emerg Med. 2014 Oct; 21(10):1135-42.
        View in: PubMed
      14. Fox JP, Tyler JA, Vashi AA, Hsia RY, Saxe JM. A variation in the value of colectomy for cancer across hospitals: mortality, readmissions, and costs. Surgery. 2014 Oct; 156(4):849-56, 860.
        View in: PubMed
      15. Brennan JJ, Chan TC, Hsia RY, Wilson MP, Castillo EM. Emergency department utilization among frequent users with psychiatric visits. Acad Emerg Med. 2014 Sep; 21(9):1015-22.
        View in: PubMed
      16. Hsia RY, Akosa Antwi Y, Nath JP. Variation in charges for 10 common blood tests in California hospitals: a cross-sectional analysis. BMJ Open. 2014; 4(8):e005482.
        View in: PubMed PMC4139626
      17. Kanzaria HK, Probst MA, Ponce NA, Hsia RY. The association between advanced diagnostic imaging and ED length of stay. Am J Emerg Med. 2014 Oct; 32(10):1253-8.
        View in: PubMed
      18. Hsia RY, Akosa Antwi Y, Weber E, Brownell Nath J. A cross-sectional analysis of variation in charges and prices across California for percutaneous coronary intervention. PLoS One. 2014; 9(8):e103829.
        View in: PubMed PMC4121236
      19. Liu C, Srebotnjak T, Hsia RY. California emergency department closures are associated with increased inpatient mortality at nearby hospitals. Health Aff (Millwood). 2014 Aug; 33(8):1323-9.
        View in: PubMed PMC4214135
      20. Newgard CD, Richardson D, Holmes JF, Rea TD, Hsia RY, Mann NC, Staudenmayer K, Barton ED, Bulger EM, Haukoos JS. Physiologic field triage criteria for identifying seriously injured older adults. Prehosp Emerg Care. 2014 Oct-Dec; 18(4):461-70.
        View in: PubMed
      21. Baker LC, Hsia RY. The association between community-level insurance coverage and emergency department use. Med Care. 2014 Jun; 52(6):535-40.
        View in: PubMed PMC4117395
      22. Hsia RY, Akosa Antwi Y. Variation in charges for emergency department visits across California. Ann Emerg Med. 2014 Aug; 64(2):120-6, 126.e1-4.
        View in: PubMed PMC4215935
      23. Staudenmayer K, Lin F, Mackersie R, Spain D, Hsia R. Variability in California triage from 2005 to 2009: a population-based longitudinal study of severely injured patients. J Trauma Acute Care Surg. 2014 Apr; 76(4):1041-7.
        View in: PubMed PMC4221245
      24. Hsia RY, Srebotnjak T, Maselli J, Crandall M, McCulloch C, Kellermann AL. The association of trauma center closures with increased inpatient mortality for injured patients. J Trauma Acute Care Surg. 2014 Apr; 76(4):1048-54.
        View in: PubMed PMC4217699
      25. Dean D, Wetzel B, White N, Kuppermann N, Wang NE, Haukoos JS, Hsia RY, Mann NC, Barton ED, Newgard CD. From 9-1-1 call to death: evaluating traumatic deaths in seven regions for early recognition of high-risk patients. J Trauma Acute Care Surg. 2014 Mar; 76(3):846-53.
        View in: PubMed
      26. Wang T, Srebotnjak T, Brownell J, Hsia RY. Emergency department charges for asthma-related outpatient visits by insurance status. J Health Care Poor Underserved. 2014 Feb; 25(1):396-405.
        View in: PubMed PMC4063557
      27. Handel DA, Fu R, Vu E, Augustine JJ, Hsia RY, Shufflebarger CM, Sun B. Association of emergency department and hospital characteristics with elopements and length of stay. J Emerg Med. 2014 Jun; 46(6):839-46.
        View in: PubMed
      28. Hsia RY, Akosa Antwi Y, Weber E. Analysis of variation in charges and prices paid for vaginal and caesarean section births: a cross-sectional study. BMJ Open. 2014; 4(1):e004017.
        View in: PubMed PMC3902513
      29. Brownell J, Wang J, Smith A, Stephens C, Hsia RY. Trends in emergency department visits for ambulatory care sensitive conditions by elderly nursing home residents, 2001 to 2010. JAMA Intern Med. 2014 Jan; 174(1):156-8.
        View in: PubMed PMC4063553
      30. Kellermann AL, Hsia RY, Yeh C, Morganti KG. Emergency care: then, now, and next. Health Aff (Millwood). 2013 Dec; 32(12):2069-74.
        View in: PubMed
      31. Schuur JD, Hsia RY, Burstin H, Schull MJ, Pines JM. Quality measurement in the emergency department: past and future. Health Aff (Millwood). 2013 Dec; 32(12):2129-38.
        View in: PubMed
      32. Hsia RY, Asch SM, Weiss RE, Zingmond D, Gabayan G, Liang LJ, Han W, McCreath H, Sun BC. Is emergency department crowding associated with increased "bounceback" admissions? Med Care. 2013 Nov; 51(11):1008-14.
        View in: PubMed PMC3839788
      33. Newgard CD, Kuppermann N, Holmes JF, Haukoos JS, Wetzel B, Hsia RY, Wang NE, Bulger EM, Staudenmayer K, Mann NC, Barton ED, Wintemute G. Gunshot injuries in children served by emergency services. Pediatrics. 2013 Nov; 132(5):862-70.
        View in: PubMed PMC3813400
      34. Staudenmayer KL, Hsia RY, Mann NC, Spain DA, Newgard CD. Triage of elderly trauma patients: a population-based perspective. J Am Coll Surg. 2013 Oct; 217(4):569-76.
        View in: PubMed PMC3839622
      35. Herring AA, Johnson B, Ginde AA, Camargo CA, Feng L, Alter HJ, Hsia R. High-intensity emergency department visits increased in California, 2002-09. Health Aff (Millwood). 2013 Oct; 32(10):1811-9.
        View in: PubMed PMC4109394
      36. Hsia RY, Brownell J, Wilson S, Gordon N, Baker LC. Trends in adult emergency department visits in California by insurance status, 2005-2010. JAMA. 2013 Sep 18; 310(11):1181-3.
        View in: PubMed PMC4011840
      37. Newgard CD, Staudenmayer K, Hsia RY, Mann NC, Bulger EM, Holmes JF, Fleischman R, Gorman K, Haukoos J, McConnell KJ. The cost of overtriage: more than one-third of low-risk injured patients were taken to major trauma centers. Health Aff (Millwood). 2013 Sep; 32(9):1591-9.
        View in: PubMed PMC4044817
      38. Newgard CD, Mann NC, Hsia RY, Bulger EM, Ma OJ, Staudenmayer K, Haukoos JS, Sahni R, Kuppermann N. Patient choice in the selection of hospitals by 9-1-1 emergency medical services providers in trauma systems. Acad Emerg Med. 2013 Sep; 20(9):911-9.
        View in: PubMed PMC3785298
      39. Xu M, Wong TC, Wong SY, Chin KS, Tsui KL, Hsia RY. Delays in service for non-emergent patients due to arrival of emergent patients in the emergency department: a case study in Hong Kong. J Emerg Med. 2013 Aug; 45(2):271-80.
        View in: PubMed
      40. Newgard CD, Hsia RY, Mann NC, Schmidt T, Sahni R, Bulger EM, Wang NE, Holmes JF, Fleischman R, Zive D, Staudenmayer K, Haukoos JS, Kuppermann N. The trade-offs in field trauma triage: a multiregion assessment of accuracy metrics and volume shifts associated with different triage strategies. J Trauma Acute Care Surg. 2013 May; 74(5):1298-306; discussion 1306.
        View in: PubMed PMC3726266
      41. Crandall M, Sharp D, Unger E, Straus D, Brasel K, Hsia R, Esposito T. Trauma deserts: distance from a trauma center, transport times, and mortality from gunshot wounds in Chicago. Am J Public Health. 2013 Jun; 103(6):1103-9.
        View in: PubMed
      42. Barnett AS, Wang NE, Sahni R, Hsia RY, Haukoos JS, Barton ED, Holmes JF, Newgard CD. Variation in prehospital use and uptake of the national Field Triage Decision Scheme. Prehosp Emerg Care. 2013 Apr-Jun; 17(2):135-48.
        View in: PubMed PMC3645841
      43. Raven MC, Lowe RA, Maselli J, Hsia RY. Comparison of presenting complaint vs discharge diagnosis for identifying " nonemergency" emergency department visits. JAMA. 2013 Mar 20; 309(11):1145-53.
        View in: PubMed PMC3711676
      44. Gabayan GZ, Asch SM, Hsia RY, Zingmond D, Liang LJ, Han W, McCreath H, Weiss RE, Sun BC. Factors associated with short-term bounce-back admissions after emergency department discharge. Ann Emerg Med. 2013 Aug; 62(2):136-144.e1.
        View in: PubMed PMC3720678
      45. Caldwell N, Srebotnjak T, Wang T, Hsia R. "How much will I get charged for this?" Patient charges for top ten diagnoses in the emergency department. PLoS One. 2013; 8(2):e55491.
        View in: PubMed PMC3584078
      46. Sun BC, Hsia RY, Weiss RE, Zingmond D, Liang LJ, Han W, McCreath H, Asch SM. Effect of emergency department crowding on outcomes of admitted patients. Ann Emerg Med. 2013 Jun; 61(6):605-611.e6.
        View in: PubMed PMC3690784
      47. Hsia RY, Kanzaria HK, Srebotnjak T, Maselli J, McCulloch C, Auerbach AD. Is emergency department closure resulting in increased distance to the nearest emergency department associated with increased inpatient mortality? Ann Emerg Med. 2012 Dec; 60(6):707-715.e4.
        View in: PubMed PMC4096136
      48. Nishijima DK, Haukoos JS, Newgard CD, Staudenmayer K, White N, Slattery D, Maxim PC, Gee CA, Hsia RY, Melnikow JA, Holmes JF. Variability of ICU use in adult patients with minor traumatic intracranial hemorrhage. Ann Emerg Med. 2013 May; 61(5):509-517.e4.
        View in: PubMed PMC3880139
      49. Delgado MK, Newgard CD, Hsia RY. Helicopter vs ground transportation for patients with trauma. JAMA. 2012 Aug 8; 308(6):563; author reply 565.
        View in: PubMed
      50. Hsia RY, Asch SM, Weiss RE, Zingmond D, Liang LJ, Han W, McCreath H, Sun BC. California hospitals serving large minority populations were more likely than others to employ ambulance diversion. Health Aff (Millwood). 2012 Aug; 31(8):1767-76.
        View in: PubMed PMC3618957
      51. Hsia RY, Kothari AH, Srebotnjak T, Maselli J. Health care as a “market good”? Appendicitis as a case study. Arch Intern Med. 2012 May 28; 172(10):818-9.
        View in: PubMed PMC3624019
      52. Nakamura Y, Daya M, Bulger EM, Schreiber M, Mackersie R, Hsia RY, Mann NC, Holmes JF, Staudenmayer K, Sturges Z, Liao M, Haukoos J, Kuppermann N, Barton ED, Newgard CD. Evaluating age in the field triage of injured persons. Ann Emerg Med. 2012 Sep; 60(3):335-45.
        View in: PubMed PMC3428427
      53. Newgard CD, Kampp M, Nelson M, Holmes JF, Zive D, Rea T, Bulger EM, Liao M, Sherck J, Hsia RY, Wang NE, Fleischman RJ, Barton ED, Daya M, Heineman J, Kuppermann N. Deciphering the use and predictive value of "emergency medical services provider judgment" in out-of-hospital trauma triage: a multisite, mixed methods assessment. J Trauma Acute Care Surg. 2012 May; 72(5):1239-48.
        View in: PubMed PMC3376024
      54. Newgard C, Malveau S, Staudenmayer K, Wang NE, Hsia RY, Mann NC, Holmes JF, Kuppermann N, Haukoos JS, Bulger EM, Dai M, Cook LJ. Evaluating the use of existing data sources, probabilistic linkage, and multiple imputation to build population-based injury databases across phases of trauma care. Acad Emerg Med. 2012 Apr; 19(4):469-80.
        View in: PubMed PMC3334286
      55. Staudenmayer K, Hsia R, Wang E, Sporer K, Ghilarducci D, Spain D, Mackersie R, Sherck J, Kline R, Newgard C. The forgotten trauma patient: outcomes for injured patients evaluated by emergency medical services but not transported to the hospital. J Trauma Acute Care Surg. 2012 Mar; 72(3):594-9; discussion 599-600.
        View in: PubMed PMC3489913
      56. Fee C, Burstin H, Maselli JH, Hsia RY. Association of emergency department length of stay with safety-net status. JAMA. 2012 Feb 1; 307(5):476-82.
        View in: PubMed PMC3641855
      57. Newgard CD, Zive D, Holmes JF, Bulger EM, Staudenmayer K, Liao M, Rea T, Hsia RY, Wang NE, Fleischman R, Jui J, Mann NC, Haukoos JS, Sporer KA, Gubler KD, Hedges JR. A multisite assessment of the American College of Surgeons Committee on Trauma field triage decision scheme for identifying seriously injured children and adults. J Am Coll Surg. 2011 Dec; 213(6):709-21.
        View in: PubMed PMC3235704
      58. Hsia RY, Srebotnjak T, Kanzaria HK, McCulloch C, Auerbach AD. System-level health disparities in California emergency departments: minorities and Medicaid patients are at higher risk of losing their emergency departments. Ann Emerg Med. 2012 May; 59(5):358-65.
        View in: PubMed
      59. Hsia RY, Shen YC. Rising closures of hospital trauma centers disproportionately burden vulnerable populations. Health Aff (Millwood). 2011 Oct; 30(10):1912-20.
        View in: PubMed PMC3287365
      60. Shen YC, Hsia RY. Does decreased access to emergency departments affect patient outcomes? Analysis of acute myocardial infarction population 1996-2005. Health Serv Res. 2012 Feb; 47(1 Pt 1):188-210.
        View in: PubMed PMC3258371
      61. Westphalen AC, Hsia RY, Maselli JH, Wang R, Gonzales R. Radiological imaging of patients with suspected urinary tract stones: national trends, diagnoses, and predictors. Acad Emerg Med. 2011 Jul; 18(7):699-707.
        View in: PubMed PMC3140067
      62. Shen YC, Hsia RY. Association between ambulance diversion and survival among patients with acute myocardial infarction. JAMA. 2011 Jun 15; 305(23):2440-7.
        View in: PubMed PMC4109302
      63. Hsia RY, Kellermann AL, Shen YC. Factors associated with closures of emergency departments in the United States. JAMA. 2011 May 18; 305(19):1978-85.
        View in: PubMed PMC4063529
      64. Hsia RY, Carr BG. Measuring emergency care systems: the path forward. Ann Emerg Med. 2011 Sep; 58(3):267-9.
        View in: PubMed
      65. Hsia RY, Mbembati NA, Macfarlane S, Kruk ME. Access to emergency and surgical care in sub-Saharan Africa: the infrastructure gap. Health Policy Plan. 2012 May; 27(3):234-44.
        View in: PubMed
      66. Jayaraman S, Ozgediz D, Miyamoto J, Caldwell N, Lipnick MS, Mijumbi C, Mabweijano J, Hsia R, Dicker R. Disparities in injury mortality between Uganda and the United States: comparative analysis of a neglected disease. World J Surg. 2011 Mar; 35(3):505-11.
        View in: PubMed PMC3032913
      67. Sani R, Nameoua B, Yahaya A, Hassane I, Adamou R, Hsia RY, Joekman P, Sako A, Habibou A. Provisional surgical training programs for increasing surgical capacity in rural areas in Niger: reply to letter. World J Surg. 2011 Mar; 35(3):693.
        View in: PubMed PMC3032902
      68. Hsia RY, Asch SM, Weiss RE, Zingmond D, Liang LJ, Han W, McCreath H, Sun BC. Hospital determinants of emergency department left without being seen rates. Ann Emerg Med. 2011 Jul; 58(1):24-32.e3.
        View in: PubMed PMC3126631
      69. Tabas JA, Hsia RY. Invited commentary--Emergency department neuroimaging: are we using our heads?: Comment on "Use of neuroimaging in US emergency departments". Arch Intern Med. 2011 Feb 14; 171(3):262-4.
        View in: PubMed
      70. Lee JJ, Hsia RY. Cutaneous cryptococcal infection as a manifestation of disseminated disease. Cryptococcus neoformans. Ann Emerg Med. 2011 Feb; 57(2):100, 103.
        View in: PubMed
      71. Hsia RY, Wang E, Saynina O, Wise P, Pérez-Stable EJ, Auerbach A. Factors associated with trauma center use for elderly patients with trauma: a statewide analysis, 1999-2008. Arch Surg. 2011 May; 146(5):585-92.
        View in: PubMed PMC3121677
      72. Hsia R, Shen YC. Possible geographical barriers to trauma center access for vulnerable patients in the United States: an analysis of urban and rural communities. Arch Surg. 2011 Jan; 146(1):46-52.
        View in: PubMed PMC3121679
      73. Pilgrim R, Hilton JA, Carrier E, Pines JM, Hufstetler G, Thorby S, Milling TJ, Cesta B, Hsia RY. Research priorities for administrative challenges of integrated networks of care. Acad Emerg Med. 2010 Dec; 17(12):1330-6.
        View in: PubMed PMC3058395
      74. Hsia RY, Mahadevan SV, Brundage SI. Penetrating cardiac injury from a wooden knitting needle. J Emerg Med. 2012 Jul; 43(1):116-9.
        View in: PubMed
      75. Tang N, Stein J, Hsia RY, Maselli JH, Gonzales R. Trends and characteristics of US emergency department visits, 1997-2007. JAMA. 2010 Aug 11; 304(6):664-70.
        View in: PubMed PMC3123697
      76. Hsia RY, Ozgediz D, Mutto M, Jayaraman S, Kyamanywa P, Kobusingye OC. Epidemiology of injuries presenting to the national hospital in Kampala, Uganda: implications for research and policy. Int J Emerg Med. 2010; 3(3):165-72.
        View in: PubMed PMC2926872
      77. Shen YC, Hsia RY. Changes in emergency department access between 2001 and 2005 among general and vulnerable populations. Am J Public Health. 2010 Aug; 100(8):1462-9.
        View in: PubMed PMC2901298
      78. McQueen KA, Ozgediz D, Riviello R, Hsia RY, Jayaraman S, Sullivan SR, Meara JG. Essential surgery: Integral to the right to health. Health Hum Rights. 2010; 12(1):137-52.
        View in: PubMed
      79. Ravikumar D, Hsia R. Do California counties with lower socioeconomic levels have less access to emergency department care? Acad Emerg Med. 2010 May; 17(5):508-13.
        View in: PubMed PMC3121689
      80. Kruk ME, Wladis A, Mbembati N, Ndao-Brumblay SK, Hsia RY, Galukande M, Luboga S, Matovu A, de Miranda H, Ozgediz D, Quiñones AR, Rockers PC, von Schreeb J, Vaz F, Debas HT, Macfarlane SB. Human resource and funding constraints for essential surgery in district hospitals in Africa: a retrospective cross-sectional survey. PLoS Med. 2010 Mar; 7(3):e1000242.
        View in: PubMed PMC2834706
      81. Bickler S, Ozgediz D, Gosselin R, Weiser T, Spiegel D, Hsia R, Dunbar P, McQueen K, Jamison D. Key concepts for estimating the burden of surgical conditions and the unmet need for surgical care. World J Surg. 2010 Mar; 34(3):374-80.
        View in: PubMed PMC2816802
      82. Riviello R, Ozgediz D, Hsia RY, Azzie G, Newton M, Tarpley J. Role of collaborative academic partnerships in surgical training, education, and provision. World J Surg. 2010 Mar; 34(3):459-65.
        View in: PubMed PMC2816823
      83. Hsia R, Razzak J, Tsai AC, Hirshon JM. Placing emergency care on the global agenda. Ann Emerg Med. 2010 Aug; 56(2):142-9.
        View in: PubMed
      84. Hsia RY, Wang E, Torres H, Saynina O, Wise PH. Disparities in trauma center access despite increasing utilization: data from California, 1999 to 2006. J Trauma. 2010 Jan; 68(1):217-24.
        View in: PubMed PMC2805766
      85. Luboga S, Macfarlane SB, von Schreeb J, Kruk ME, Cherian MN, Bergström S, Bossyns PB, Denerville E, Dovlo D, Galukande M, Hsia RY, Jayaraman SP, Lubbock LA, Mock C, Ozgediz D, Sekimpi P, Wladis A, Zakariah A, Dade NB, Donkor P, Gatumbu JK, Hoekman P, Ijsselmuiden CB, Jamison DT, Jessani N, Jiskoot P, Kakande I, Mabweijano JR, Mbembati N, McCord C, Mijumbi C, de Miranda H, Mkony CA, Mocumbi P, Ndihokubwayo JB, Ngueumachi P, Ogbaselassie G, Okitombahe EL, Toure CT, Vaz F, Zikusooka CM, Debas HT. Increasing access to surgical services in sub-saharan Africa: priorities for national and international agencies recommended by the Bellagio Essential Surgery Group. PLoS Med. 2009 Dec; 6(12):e1000200.
        View in: PubMed PMC2791210
      86. Jayaraman S, Mabweijano JR, Lipnick MS, Caldwell N, Miyamoto J, Wangoda R, Mijumbi C, Hsia R, Dicker R, Ozgediz D. Current patterns of prehospital trauma care in Kampala, Uganda and the feasibility of a lay-first-responder training program. World J Surg. 2009 Dec; 33(12):2512-21.
        View in: PubMed
      87. Martinez-Diaz GJ, Hsia R. Altered mental status from acyclovir. J Emerg Med. 2011 Jul; 41(1):55-8.
        View in: PubMed
      88. Hsia RY, Tabas JA. Emergency care: the increasing weight of increasing waits. Arch Intern Med. 2009 Nov 9; 169(20):1836-8.
        View in: PubMed
      89. Sani R, Nameoua B, Yahaya A, Hassane I, Adamou R, Hsia RY, Hoekman P, Sako A, Habibou A. The impact of launching surgery at the district level in Niger. World J Surg. 2009 Oct; 33(10):2063-8.
        View in: PubMed PMC2746305
      90. Jayaraman S, Mabweijano JR, Lipnick MS, Caldwell N, Miyamoto J, Wangoda R, Mijumbi C, Hsia R, Dicker R, Ozgediz D. First things first: effectiveness and scalability of a basic prehospital trauma care program for lay first-responders in Kampala, Uganda. PLoS One. 2009; 4(9):e6955.
        View in: PubMed PMC2736400
      91. Shen YC, Hsia RY, Kuzma K. Understanding the risk factors of trauma center closures: do financial pressure and community characteristics matter? Med Care. 2009 Sep; 47(9):968-78.
        View in: PubMed PMC3121699
      92. Ozgediz D, Hsia R, Weiser T, Gosselin R, Spiegel D, Bickler S, Dunbar P, McQueen K. Population health metrics for surgery: effective coverage of surgical services in low-income and middle-income countries. World J Surg. 2009 Jan; 33(1):1-5.
        View in: PubMed
      93. Martinez-Diaz GJ, Formaker C, Hsia R. Atrial fibrillation from thyroid storm. J Emerg Med. 2012 Jan; 42(1):e7-9.
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      94. Hsia RY, Wang E, Thanassi WT. Fever, abdominal pain, and leukopenia in a 13-year-old: a case-based review of meningococcemia. J Emerg Med. 2009 Jul; 37(1):21-8.
        View in: PubMed
      95. Martinez-Diaz GJ, Hsia R. Pott's Puffy tumor after minor head trauma. Am J Emerg Med. 2008 Jul; 26(6):739.e1-3.
        View in: PubMed
      96. Hsia RY, Belfer ML. A framework for the economic analysis of child and adolescent mental disorders. Int Rev Psychiatry. 2008 Jun; 20(3):251-9.
        View in: PubMed
      97. Hsia RY, MacIsaac D, Palm E, Baker LC. Trends in charges and payments for nonhospitalized emergency department pediatric visits, 1996-2003. Acad Emerg Med. 2008 Apr; 15(4):347-54.
        View in: PubMed
      98. Hsia RY, MacIsaac D, Baker LC. Decreasing reimbursements for outpatient emergency department visits across payer groups from 1996 to 2004. Ann Emerg Med. 2008 Mar; 51(3):265-74, 274.e1-5.
        View in: PubMed
      99. Hsia R, Chiao A, Law Courter J. Images in emergency medicine. Cecal volvulus. Ann Emerg Med. 2007 Mar; 49(3):272, 281.
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      100. Hsia RY, Chan J, Baker LC. Do mandates requiring insurers to pay for emergency care influence the use of the emergency department? Health Aff (Millwood). 2006 Jul-Aug; 25(4):1086-94.
        View in: PubMed
      101. Hsu LD, DeJong W, Hsia R, Chang M, Ryou M, Yeh E. Student leadership in public health advocacy: lessons learned from the hepatitis B initiative. Am J Public Health. 2003 Aug; 93(8):1250-2.
        View in: PubMed PMC1447948
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