Dr. Nassar is a board certified General Surgeon in both the USA and Canada. Dr. Nassar has five years of clinical experience in tertiary care referral academic health-centres in Canada prior to joining Stanford University in surgery, trauma and critical care. His clinical interests are emergency and elective surgery in addition to trauma and critical care medicine. He is also a skilled endoscopist performing both upper and lower gastrointestinal endoscopy. His research interests are varied and include the development of assessment tools for trainees, burnout among physicians and other healthcare professionals. In addition he is especially interested in training trainees in simulation based medical education with a focus on perioperative inter-professional collaboration and patient safety. He is a true clinician educator and is a certified simulation educator as well as an ATLS course director. Dr. Nassar has also earned an MSc degree in Health Science Education from McMaster University, Canada.

Clinical Focus

  • General Surgery
  • Acute Care Surgery
  • Trauma
  • Critical Care
  • Hernia
  • Abdominal wall reconstruction
  • EGD and Colonoscopy

Academic Appointments

Administrative Appointments

  • Associate Program Director, Surgical Critical Care, Stanford University (2018 - Present)

Professional Education

  • Fellowship:McMaster University Michael G DeGroote School of Medicine Registrar (2012) Canada
  • Residency:McMaster University Michael G DeGroote School of Medicine Registrar (2011) Canada
  • Board Certification: General Surgery, American Board of Surgery (2011)
  • MSc, McMaster University, Hamilton, ON, Canada, Health Science Education (2015)
  • Board Certification: Critical Care Medicine, Royal College of Physicians and Surgeons of Canada (2012)
  • Board Certification, American Board of Surgery, General Surgery (2011)
  • Board Certification: General Surgery, Royal College of Physicians and Surgeons of Canada (2011)
  • O-IMG Clerkship, McMaster University, Hamilton, ON, Canada, Clerkship Undergraduate program (2006)
  • Medical Education:University of Al-Mustansiriyah College of Medicine (1995) Iraq

All Publications

  • The MacTRAUMA TTL Assessment Tool: Developing a Novel Tool for Assessing Performance of Trauma Trainees: Initial Reliability Testing Journal of Surgical Education Nassar, A., Coates , A., Tuma, F., Farrokhyar, F., Reid, S. 2016
  • Burnout Among Academic Surgeons Canadian Surgery Forum Nassar, A. K., Reid, S., Kahnamoui, K., McConnell, M. 2015: S177

    View details for DOI 10.1503/cjs.008615

  • A novel use of high fidelity simulation to test inter-rater reliability of a TTL assessment tool Simulation Summit Reid, S., Coates, A., Nassar, A., Farrokhyar, F., Tuma, F., Bhandari, M., Faidi, S. Royal College of Physicians and Surgeons of Canada. 2014: 56
  • MOTIVATORS AND STRESSORS FOR CANADIAN RESEARCH COORDINATORS IN CRITICAL CARE: THE MOTIVATE SURVEY Canadian Critical Care Forum McDonald, E., Zytaruk, N., Borges, D., Bennardo, M., Clarke, F., Heels-Ansdell, D., Hand, L., Meade, M., Nassar, A., Cook, D. Canadian Critical Care Forum. 2014
  • BURNOUT AMONG CRITICAL CARE WORKERS Canadian Critical Care Forum Nassar, A., Meade, M., Reid, S., Kahnamoui, K., Karachi, T., Sawchuk, C., Cook, D. Canadian Critical Care Forum. 2014
  • Developing a tool to evaluate trauma team leader performance: initial reliability testing. The Trauma Association of Canada Annual Scientific Meeting Reid, S., Coates, A., Nassar, A., Farrokhyar, F., Tuma, F., Faidi, S. 2014: S76
  • The mactrauma TTL assessment tool: developing a novel tool for assessing performance of trauma trainees Trauma Association of Canada Reid, S., Coates, C., Nassar, A., Tuma, F., Farrokhyar, F., Faidi, S. 2013: S13
  • The Effect of General Surgery Clerkship Rotation on the Attitude of Medical Students Towards General Surgery as a Future Career JOURNAL OF SURGICAL EDUCATION Al-Heeti, K. N., Nassar, A. K., DeCorby, K., Winch, J., Reid, S. 2012; 69 (4): 544-549


    Literature suggests declining interest in General Surgery (GS) and other surgical specialties, with fewer Canadian medical residency applicants identifying a surgical specialty as their first choice. Although perceptions of surgical careers may begin before enrollment in clerkship, clerkship itself provides the most concentrated environment for perceptions to evolve. Most students develop perceptions about specialties during their clinical clerkships. This study examines the immediate impact of GS clerkship on student attitudes toward GS as a career, and on preferences towards GS compared with other specialties.A pre-post design involved 61 McMaster clinical clerks. Two instruments were used to collect data from students over the course of clerkship (2008-2009). Paired comparison (PC) compared ranking of career choices before and after clerkship. Semantic differential (SD) measured attitudes toward GS and variables that may have affected attitudes before and after clerkship. Analyses used SPSS 16.0 (SPSS Inc., Chicago, IL).Clerks ranked preferences for GS changed substantially after clerkship, moving from the 10th to the 5th position compared with other specialties. Ranks of surgical subspecialties also changed, though GS demonstrated the largest improvement. SD results were consistent with PC, showing improved attitudes after rotation, with differences both statistically and practically significant (t = 3.81, p < 0.000, effect size = 0.23). Results indicated that attitudes toward all areas related to GS clerkship (attending physicians, surgical residents, ward nurses, scrub nurses, workload, knowledge achieved, technical skills acquired) improved significantly except attitude toward technical skills acquired.Clinical clerkship at McMaster was a positive experience and significantly enhanced preferences towards GS and attitudes towards GS as a career. Medical schools should foster positive interaction between clinical clerks and staff (including attending surgeons and nurses), ensure that teaching hospital staff provide a positive experience for clerks, and should provide opportunities to learn basic technical skills during GS clerkship.

    View details for DOI 10.1016/j.jsurg.2012.04.005

    View details for Web of Science ID 000305366200018

    View details for PubMedID 22677595