William Shyy, MD

William Shyy, MD

  • Emergency Medicine
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Dr. William Shyy is a board-certified Associate Clinical Professor of Emergency Medicine at UCLA with particular expertise in using ultrasound imaging in emergency care. Dr. Shyy earned his medical degree at the University of Iowa Carver College of Medicine. He completed a residency and chief residency in emergency medicine at the University of Chicago, followed by a fellowship in emergency ultrasound at UCSF. While faculty at UCSF, he was the Director of Emergency Ultrasound, Ultrasound Fellowship Director, and a Bridges Coach in the UCSF SOM. He currently holds the role of Director of Emergency Ultrasound at UCLA Santa Monica and is an Educator for Excellence in the DGSOM. He works clinically at UCLA Ronald Reagan Medical Center and Santa Monica Medical Center. He is a national leader in emergency medicine education and serves on national committees for the American College of Emergency Physicians. In research, Dr. Shyy focuses on bedside applications of ultrasound, with the goal of improving care for patients being seen in the emergency department.




Medical Board Certification

Emergency Medicine, American Board of Emergency Medicine, 2015


Emergency Ultrasound, UCSF Department of Emergency Medicine Emergency Ultrasound Fellowship, 2015


Emergency Medicine, University of Chicago, 2014


MD, University of Iowa College of Medicine, 2011


  • UCSF Haile T. Debas Academy of Medical Educators Member, 2020
  • ACEP National Junior Faculty Teaching Award, 2020
  • UCSF EM Residency Quarterly Bedside Teaching Award, 2016, 2018, 2020
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Hospital Affiliations

Ronald Reagan UCLA Medical Center

UCLA Santa Monica Medical Center



  1. Shyy W, Dietz F, Sheffield VC, Morcuende JA.  Evaluation of CAND2 and WNT7a as Candidate Genes in the Etiology of Idiopathic Clubfoot.  Clinical Orthopaedics and Related Research 2009 May; 467(5): 1201-5. doi: 10.1007/s11999-008-0701-x.
  2. Shyy W, Wang K, Sheffield VC, Morcuende JA.  Evaluation of Embryonic and Perinatal Myosin Gene Mutations and the Etiology of Congenital Idiopathic Clubfoot.  Journal of Pediatric Orthopaedics 2010 April/May; 30(3): 231-234. doi: 10.1097/BPO.0b013e3181d35e3f.
  3. Shyy W, Knight RS, Teismann NA.  Diagnosis of Adult Intussusception.  J Emerg Med. 2015 Oct;49(4):498-9. doi: 10.1016/j.jemermed.2015.03.027.
  4. Shyy W, Knight RS, Goldstein R, Isaacs ED, Teismann NA. Sonographic Findings in Necrotizing Fasciitis: Two Ends of the Spectrum.  J Ultrasound Med 2016 Oct;35(10):2273-7. doi: 10.7863/ultra.15.12068.
  5. Shyy W, Knight RS, Kornblith A, Teismann NA.  Point-of-Care Diagnosis of Cardiac Tamponade Identified by the Flow Velocity Paradoxus.  J Ultrasound Med. 2017 Nov;36(11):2197-2201. doi: 10.1002/jum.14251.
  6. Shyy W, Knight RS, Teismann NA. Right Lower Quadrant Abdominal Pain: Do Not Forget About Ovarian Torsion on the Computed Tomography Scan. J Emerg Med. 2018 Aug;55(2):e43-e45. doi: 10.1016/j.jemermed.2018.01.006.
  7. Gandhi K, Shyy W, Knight S, Teismann N. Point-Of-Care Ultrasound for the Evaluation of Non-traumatic Visual Disturbances in the Emergency Department: The VIGMO Protocol. Am J Emerg Med. 2019 Aug;37(8):1547-1553. doi: 10.1016/j.ajem.2019.04.049.
  8. Shyy W, Knight S. SONO Case Series:  35-Year-Old Male with Flank Pain. EMJ. 2020 Sep;37(9):582-584. doi: 10.1136/emermed-2019-208666.
  9. Shyy W. SONO Case Series:  65-Year-Old Male with Right Eye Vision Loss. EMJ. 2021 Jul;38(7):556-557. doi: 10.1136/emermed-2019-209080.
  10. Shyy W. SONO Case Series:  85-Year-Old Female with Left Hip Pain. EMJ. 2022 Jan;39(1):77-79. doi: 10.1136/emermed-2020-210333.


  • UCSF Haile T. Debas Academy of Medical Educators Member, 2020
  • ACEP National Junior Faculty Teaching Award, 2020
  • UCSF EM Residency Quarterly Bedside Teaching Award, 2016, 2018, 2020
  • UCSF Academy of Medical Educators’ Excellence in Teaching Award, 2019
  • UCSF Emergency Department Colleague of the Month Honorable Mention, 2018
  • UCSF Medical Center Patient Safety Committee’s Great Catch Award, 2018
  • Professionalism in Emergency Medicine Award, University of Chicago, 2014
  • Chief Resident, University of Chicago Emergency Medicine Residency, 2014
  •  Resident of the Year- PGY2, Selected by the nurses of the University of Chicago Emergency Department, 2013