Ralph Wang, MD, MAS
Professor
Emergency Medicine
School of Medicine

Education & Training

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• MAS Clinical Research UCSF 06/2014
• Point of care ultrasound Alameda County Medical Center 06/2005
• Emergency Medicine Alameda County Medical Center 06/2004
• M.D. Medicine Tufts University 05/2000

Grants and Projects

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• Advancing the Quality of Emergency Department Renal Stone Management, NIH, 2013-2019

Publications (77)

Top publication keywords:
Cardiopulmonary ResuscitationRespiratory Protective DevicesTomography, X-Ray ComputedUreteral CalculiOut-of-Hospital Cardiac ArrestAppendicitisUrolithiasisDiagnostic Tests, RoutineKidney CalculiUrinary CalculiNaloxoneAbdominal PainEmergency Medical ServicesDrug OverdoseEmergency Service, Hospital

• N95 Filtering Facepiece Respirator Reuse, Extended Use, and Filtration Efficiency.
  JAMA network open 2024 Wang RC, Addo N, Degesys NF, Fahimi J, Ford JS, Rosenthal E, Harris AR, Yaffee AQ, Peterson S, Rothmann RE, DeAngelis J, Tolia V, Shah MN, Stephenson TB, Nogueira-Prewitt SJ, Yoon KN, Fisher EM, Raven…
• Break Wave Lithotripsy for Urolithiasis: Results of the First-in-Human International Multi-Institutional Clinical Trial.
  The Journal of urology 2024 Chew BH, Harper JD, Sur RL, Chi T, De S, Buckley AR, Paterson RF, Wong VKF, Forbes CM, Hall MK, Kessler R, Bechis SK, Woo JR, Wang RC, Bayne DB, Bochinski D, Schuler TD, Wollin TA, Samji R, Sorensen …
• Naloxone and Patient Outcomes in Out-of-Hospital Cardiac Arrests in California.
  JAMA network open 2024 Dillon DG, Montoy JCC, Nishijima DK, Niederberger S, Menegazzi JJ, Lacocque J, Rodriguez RM, Wang RC
• Trends in presumed drug overdose out-of-hospital cardiac arrests in San Francisco, 2015-2023.
  Resuscitation 2024 Wang RC, Montoy JCC, Rodriguez RM, Menegazzi JJ, Lacocque J, Dillon DG
• Ethnic and racial differences in self-reported symptoms, health status, activity level, and missed work at 3 and 6 months following SARS-CoV-2 infection.
  Frontiers in public health 2024 O'Laughlin KN, Klabbers RE, Ebna Mannan I, Gentile NL, Geyer RE, Zheng Z, Yu H, Li SX, Chan KCG, Spatz ES, Wang RC, L'Hommedieu M, Weinstein RA, Plumb ID, Gottlieb M, Huebinger RM, Hagen M, Elmore JG,…

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• Missed Opportunities to Diagnose and Treat Asymptomatic Hypertension in Emergency Departments in the United States, 2016-2019.
  The Journal of emergency medicine 2024 Akhetuamhen A, Bibbins-Domingo K, Fahimi J, Fontil V, Rodriguez R, Wang RC
• Incidence of Fit Test Failure During N95 Respirator Reuse and Extended Use.
  JAMA network open 2024 Wang RC, Degesys NF, Fahimi J, Jin C, Rosenthal E, Lazar AA, Yaffee AQ, Peterson S, Rothmann RE, Jones CMC, Tolia V, Shah MN, Raven MC, Reuse N95 Group
• National community disparities in prehospital penetrating trauma adjusted for income, 2020-2021.
  The American journal of emergency medicine 2023 Huebinger R, Ketterer AR, Hill MJ, Mann NC, Wang RC, Montoy JCC, Osborn L, Ugalde IT
• Racial Disparities in Emergency Department Physical Restraint Use: A Systematic Review and Meta-Analysis.
  JAMA internal medicine 2023 Eswaran V, Molina MF, Hwong AR, Dillon DG, Alvarez L, Allen IE, Wang RC
• Prevalence of Symptoms ≤12 Months After Acute Illness, by COVID-19 Testing Status Among Adults - United States, December 2020-March 2023.
  MMWR. Morbidity and mortality weekly report 2023 Montoy JCC, Ford J, Yu H, Gottlieb M, Morse D, Santangelo M, O'Laughlin KN, Schaeffer K, Logan P, Rising K, Hill MJ, Wisk LE, Salah W, Idris AH, Huebinger RM, Spatz ES, Rodriguez RM, Klabbers RE, …
• Efficacy of emergency department calcium administration in cardiac arrest: A 9-year retrospective evaluation.
  Resuscitation 2023 Dillon DG, Wang RC, Shetty P, Douchee J, Rodriguez RM, Montoy JCC
• Severe Fatigue and Persistent Symptoms at 3 Months Following Severe Acute Respiratory Syndrome Coronavirus 2 Infections During the Pre-Delta, Delta, and Omicron Time Periods: A Multicenter Prospective Cohort Study.
  Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2023 Gottlieb M, Wang RC, Yu H, Spatz ES, Montoy JCC, Rodriguez RM, Chang AM, Elmore JG, Hannikainen PA, Hill M, Huebinger RM, Idris AH, Lin Z, Koo K, McDonald S, O'Laughlin KN, Plumb ID, Santangelo M, …
• Long COVID Clinical Phenotypes up to 6 Months After Infection Identified by Latent Class Analysis of Self-Reported Symptoms.
  Open forum infectious diseases 2023 Gottlieb M, Spatz ES, Yu H, Wisk LE, Elmore JG, Gentile NL, Hill M, Huebinger RM, Idris AH, Kean ER, Koo K, Li SX, McDonald S, Montoy JCC, Nichol G, O'Laughlin KN, Plumb ID, Rising KL, Santangelo M, …
• Association Between SARS-CoV-2 Variants and Frequency of Acute Symptoms: Analysis of a Multi-institutional Prospective Cohort Study-December 20, 2020-June 20, 2022.
  Open forum infectious diseases 2023 Wang RC, Gottlieb M, Montoy JCC, Rodriguez RM, Yu H, Spatz ES, Chandler CW, Elmore JG, Hannikainen PA, Chang AM, Hill M, Huebinger RM, Idris AH, Koo K, Li SX, McDonald S, Nichol G, O'Laughlin KN, …
• Three-Month Symptom Profiles Among Symptomatic Adults With Positive and Negative Severe Acute Respiratory Syndrome Coronavirus 2 Tests: A Prospective Cohort Study From the INSPIRE Group.
  Clinical infectious diseases : an official publication of the Infectious Diseases Society of America 2023 Spatz ES, Gottlieb M, Wisk LE, Anderson J, Chang AM, Gentile NL, Hill MJ, Huebinger RM, Idris AH, Kinsman J, Koo K, Li SX, McDonald S, Plumb ID, Rodriguez RM, Saydah S, Slovis B, Stephens KA, Unger ER…
• Advance Care Planning Among Patients With Advanced Illness Presenting to the Emergency Department.
  The Journal of emergency medicine 2023 Asiaban JN, Patel S, Ormseth CH, Donohue KC, Wallin D, Wang RC, Raven MC
• Improvements to emergency department length of stay and user satisfaction after implementation of an integrated consult order.
  Journal of the American College of Emergency Physicians open 2023 Ravi A, Shochat G, Wang RC, Khanna R
• Association of Initial SARS-CoV-2 Test Positivity With Patient-Reported Well-being 3 Months After a Symptomatic Illness.
  JAMA network open 2022 Wisk LE, Gottlieb MA, Spatz ES, Yu H, Wang RC, Slovis BH, Saydah S, Plumb ID, O'Laughlin KN, Montoy JCC, McDonald SA, Lin Z, Lin JS, Koo K, Idris AH, Huebinger RM, Hill MJ, Gentile NL, Chang AM, …
• Unchanged Diagnostic Imaging for Urinary Stone Disease-Where Do We Go From Here?
  JAMA internal medicine 2022 Smith-Bindman R, Nielsen ME, Wang RC
• Extended-Release Naltrexone and Case Management for Treatment of Alcohol Use Disorder in the Emergency Department.
  Annals of emergency medicine 2022 Murphy CE, Coralic Z, Wang RC, Montoy JCC, Ramirez B, Raven MC
• Opioid Analgesic Use After an Acute Pain Visit: Evidence from a Urolithiasis Patient Cohort.
  The western journal of emergency medicine 2022 Wentz AE, Wang RC, Marshall BDL, Shireman TI, Liu T, Merchant RC
• Effect of an ultrasound-first clinical decision tool in emergency department patients with suspected nephrolithiasis: A randomized trial.
  The American journal of emergency medicine 2022 Wang RC, Fahimi J, Dillon D, Shyy W, Mongan J, McCulloch C, Smith-Bindman R
• Study protocol for the Innovative Support for Patients with SARS-COV-2 Infections Registry (INSPIRE): A longitudinal study of the medium and long-term sequelae of SARS-CoV-2 infection.
  PloS one 2022 O'Laughlin KN, Thompson M, Hota B, Gottlieb M, Plumb ID, Chang AM, Wisk LE, Hall AJ, Wang RC, Spatz ES, Stephens KA, Huebinger RM, McDonald SA, Venkatesh A, Gentile N, Slovis BH, Hill M, Saydah S, …
• Understanding the association between frequent emergency department use and jail incarceration: A cross-sectional analysis.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2022 Eswaran V, Raven MC, Wang RC, Cawley C, Izenberg JM, Kanzaria HK
• SARS COV-2 anti-nucleocapsid and anti-spike antibodies in an emergency department healthcare worker cohort: September 2020 - April 2021.
  The American journal of emergency medicine 2022 Wang RC, Murphy CE, Kornblith AE, Hohenstein NA, Carter CM, Wong AHK, Kurtz T, Kohn MA
• Performance of Abbott ID-Now rapid nucleic amplification test for laboratory identification of COVID-19 in asymptomatic emergency department patients.
  Journal of the American College of Emergency Physicians open 2021 Ramachandran A, Noble J, Deucher A, Miller S, Tang PW, Wang RC
• Return Encounters in Emergency Department Patients Treated with Phenobarbital Versus Benzodiazepines for Alcohol Withdrawal.
  Journal of medical toxicology : official journal of the American College of Medical Toxicology 2021 Lebin JA, Mudan A, Murphy CE, Wang RC, Smollin CG
• Opioid Analgesics and Persistent Pain After an Acute Pain Emergency Department Visit: Evidence from a Cohort of Suspected Urolithiasis Patients.
  The Journal of emergency medicine 2021 Wentz AE, Wang RC, Marshall BDL, Shireman TI, Liu T, Merchant RC
• Patient reported delays in obtaining emergency care during COVID19.
  The American journal of emergency medicine 2021 Eswaran V, Wang RC, Vashi AA, Kanzaria HK, Fahimi J, Raven MC
• Effect of extended-release naltrexone on alcohol consumption: a systematic review and meta-analysis.
  Addiction (Abingdon, England) 2021 Murphy CE, Wang RC, Montoy JC, Whittaker E, Raven M
• Prevalence of SARS-Cov-2 Antibodies in Emergency Medicine Healthcare Workers.
  Annals of emergency medicine 2021 Wang RC, Murphy CE, Kornblith AE, Kurtz T, Kohn MA
• NAloxone CARdiac Arrest Decision Instruments (NACARDI) for targeted antidotal therapy in occult opioid overdose precipitated cardiac arrest.
  Resuscitation 2021 Rodriguez RM, Tseng ZH, Montoy JCC, Repplinger D, Moffatt E, Addo N, Wang RC
• Trends in Use of Diagnostic Imaging for Abdominal Pain in U.S. Emergency Departments.
  AJR. American journal of roentgenology 2020 Wang RC, Kornblith AE, Grupp-Phelan J, Smith-Bindman R, Kao LS, Fahimi J
• Trends in Imaging for Suspected Pulmonary Embolism Across US Health Care Systems, 2004 to 2016.
  JAMA network open 2020 Wang RC, Miglioretti DL, Marlow EC, Kwan ML, Theis MK, Bowles EJA, Greenlee RT, Rahm AK, Stout NK, Weinmann S, Smith-Bindman R
• Diagnostic Imaging for Kidney Stones.
  JAMA 2020 Wang RC, Stoller ML, Smith-Bindman R
• Patient Factors Associated With the Decision to Transfer Adult Patients From a Pediatric Emergency Department for Definitive Care.
  Pediatric emergency care 2020 Kornblith AE, Foster AA, Cho CS, Wang RC, Jaffe DM
• Association Between Methamphetamine Use and Psychiatric Hospitalization, Chemical Restraint, and Emergency Department Length of Stay.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2020 Murphy CE, Wang RC, Coralic Z, Lai AR, Raven M
• Buprenorphine for Opioid Use Disorder in the Emergency Department: A Retrospective Chart Review.
  The western journal of emergency medicine 2020 LeSaint KT, Klapthor B, Wang RC, Geier C
• Correlation Between N95 Extended Use and Reuse and Fit Failure in an Emergency Department.
  JAMA 2020 Degesys NF, Wang RC, Kwan E, Fahimi J, Noble JA, Raven MC
• Seizure in venlafaxine overdose: a 10-year retrospective review of the California poison control system.
  Clinical toxicology (Philadelphia, Pa.) 2020 Vo KT, Merriman AJ, Wang RC
• Recognising Bias in Studies of Diagnostic Tests Part 1: Patient Selection.
  Emergency medicine journal : EMJ 2019 Hall MK, Kea B, Wang R
• An impact analysis of the NEXUS Chest CT clinical decision rule.
  The American journal of emergency medicine 2019 Wang RC, Niedzwiecki MJ, Nishijima D, Rodriguez RM
• Recognising bias in studies of diagnostic tests part 2: interpreting and verifying the index test.
  Emergency medicine journal : EMJ 2019 Kea B, Hall MK, Wang R
• Computed Tomography Use Plateaus Among Children With Emergency Visits for Abdominal Pain.
  Pediatric emergency care 2019 Fahimi J, Kornblith AE, Kanzaria H, Herring A, Wang RC
• Potential Effect of the Protecting Access to Medicare Act on Use of Advanced Diagnostic Imaging in the Emergency Department: An Analysis of the National Hospital Ambulatory Care Survey.
  Radiology 2019 Fahimi J, Kanzaria HK, Mongan J, Kahn KL, Wang RC
• Improving perceptions of empathy in patients undergoing low-yield computerized tomographic imaging in the emergency department.
  Patient education and counseling 2017 Lin MP, Probst MA, Puskarich MA, Dehon E, Kuehl DR, Wang RC, Hess EP, Butler K, Runyon MS, Wang H, Courtney DM, Muckley B, Hobgood CD, Hall CL, Kline JA
• In Reply: Comparing Direct and Video Laryngoscopy for Prehospital Intubation: Can Meta-analysis Provide an Exact Solution?
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2017 Brian Savino P, Reichelderfer S, Mercer MP, Sporer KA, Wang RC
• Predictors for under-prescribing antibiotics in children with respiratory infections requiring antibiotics.
  The American journal of emergency medicine 2017 Kornblith AE, Fahimi J, Kanzaria HK, Wang RC
• Direct Versus Video Laryngoscopy for Prehospital Intubation: A Systematic Review and Meta-analysis.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2017 Savino PB, Reichelderfer S, Mercer MP, Wang RC, Sporer KA
• In reply.
  Annals of emergency medicine 2017 Wang RC, Fahimi J
• Medical expulsive therapy use in emergency department patients diagnosed with ureteral stones.
  The American journal of emergency medicine 2017 Wang RC, Addo N, Chi T, Moore C, Mallin M, Shiboski S, Stoller M, Smith-Bindman R
• Derivation of decision rules to predict clinically important outcomes in acute flank pain patients.
  The American journal of emergency medicine 2016 Wang RC, Rodriguez RM, Fahimi J, Hall MK, Shiboski S, Chi T, Smith-Bindman R
• In reply.
  Annals of emergency medicine 2016 Wang RC, Fahimi J
• Emergency Department Imaging Modality Effect on Surgical Management of Nephrolithiasis: A Multicenter, Randomized Clinical Trial.
  The Journal of urology 2016 Metzler IS, Smith-Bindman R, Moghadassi M, Wang RC, Stoller ML, Chi T
• Effect of Tamsulosin on Stone Passage for Ureteral Stones: A Systematic Review and Meta-analysis.
  Annals of emergency medicine 2016 Wang RC, Smith-Bindman R, Whitaker E, Neilson J, Allen IE, Stoller ML, Fahimi J
• In reply.
  Annals of emergency medicine 2016 Wang RC, Rodriguez RM, Shiboski S, Kang TL, Bailitz J
• The Impact of Clinical Decision Rules on Computed Tomography Use and Yield for Pulmonary Embolism: A Systematic Review and Meta-analysis.
  Annals of emergency medicine 2015 Wang RC, Bent S, Weber E, Neilson J, Smith-Bindman R, Fahimi J
• Managing Urolithiasis.
  Annals of emergency medicine 2015 Wang RC
• External Validation of the STONE Score, a Clinical Prediction Rule for Ureteral Stone: An Observational Multi-institutional Study.
  Annals of emergency medicine 2015 Wang RC, Rodriguez RM, Moghadassi M, Noble V, Bailitz J, Mallin M, Corbo J, Kang TL, Chu P, Shiboski S, Smith-Bindman R
• The Absence of Gallstones on Point-of-Care Ultrasound Rules Out Acute Cholecystitis.
  The Journal of emergency medicine 2015 Villar J, Summers SM, Menchine MD, Fox JC, Wang R
• Ultrasonography versus computed tomography for suspected nephrolithiasis.
  The New England journal of medicine 2014 Smith-Bindman R, Aubin C, Bailitz J, Bengiamin RN, Camargo CA, Corbo J, Dean AJ, Goldstein RB, Griffey RT, Jay GD, Kang TL, Kriesel DR, Ma OJ, Mallin M, Manson W, Melnikow J, Miglioretti DL, Miller SK…
• Oblique-axis vs. short-axis view in ultrasound-guided central venous catheterization.
  The Journal of emergency medicine 2014 Wilson JG, Berona KM, Stein JC, Wang R
• Cardiac tamponade.
  The western journal of emergency medicine 2013 Wilson JG, Epstein SM, Wang R, Kanzaria HK
• Detection of Acute Pulmonary Embolism by Bedside Ultrasound in a Patient Presenting in PEA Arrest: A Case Report.
  Case reports in emergency medicine 2012 Chung-Esaki H, Knight R, Noble J, Wang R, Coralic Z
• Radiological imaging of patients with suspected urinary tract stones: national trends, diagnoses, and predictors.
  Academic emergency medicine : official journal of the Society for Academic Emergency Medicine 2011 Westphalen AC, Hsia RY, Maselli JH, Wang R, Gonzales R
• Use of a β-hCG discriminatory zone with bedside pelvic ultrasonography.
  Annals of emergency medicine 2011 Wang R, Reynolds TA, West HH, Ravikumar D, Martinez C, McAlpine I, Jacoby VL, Stein JC
• Differential use of diagnostic ultrasound in u.s. Emergency departments by time of day.
  The western journal of emergency medicine 2011 Stein JC, Jacoby VL, Vittinghoff E, Wang R, Kwan E, Reynolds T, McAlpine I, Gonzales R
• Emergency physician ultrasonography for evaluating patients at risk for ectopic pregnancy: a meta-analysis.
  Annals of emergency medicine 2010 Stein JC, Wang R, Adler N, Boscardin J, Jacoby VL, Won G, Goldstein R, Kohn MA
• Visual stimulus: splinter localization with ultrasound.
  The Journal of emergency medicine 2009 Wang R, Frazee BW
• Ultrasound-guided supraclavicular brachial plexus nerve block vs procedural sedation for the treatment of upper extremity emergencies.
  The American journal of emergency medicine 2008 Stone MB, Wang R, Price DD
• Community-acquired necrotizing soft tissue infections: a review of 122 cases presenting to a single emergency department over 12 years.
  The Journal of emergency medicine 2007 Frazee BW, Fee C, Lynn J, Wang R, Bostrom A, Hargis C, Moore P
• Ultrasound-guided supraclavicular block for the treatment of upper extremity fractures, dislocations, and abscesses in the ED.
  The American journal of emergency medicine 2007 Stone MB, Price DD, Wang R
• Humming is as effective as Valsalva's maneuver and Trendelenburg's position for ultrasonographic visualization of the jugular venous system and common femoral veins.
  Annals of emergency medicine 2007 Lewin MR, Stein J, Wang R, Lee MM, Kernberg M, Boukhman M, Hahn IH, Lewiss RE
• Ultrasonographic confirmation of intraosseous needle placement in an adult unembalmed cadaver model.
  Annals of emergency medicine 2007 Stone MB, Teismann NA, Wang R
• Effect of head rotation on vascular anatomy of the neck: an ultrasound study.
  The Journal of emergency medicine 2006 Wang R, Snoey ER, Clements RC, Hern HG, Price D
• Feasibility of forearm ultrasonography-guided nerve blocks of the radial, ulnar, and median nerves for hand procedures in the emergency department.
  Annals of emergency medicine 2006 Liebmann O, Price D, Mills C, Gardner R, Wang R, Wilson S, Gray A
• Ultrasound-guided deep brachial and basilic vein cannulation in the emergency department.
  The California journal of emergency medicine 2005 Wang R, Snoey E, Frazee B