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Gary Alan Bass, MD MSc MBA FICS FEBS(Em Surg)
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Assistant Professor of Surgery at the Hospital of the University of Pennsylvania
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Attending Surgeon and Intensivist, Hospital of the University of Pennsylvania, Penn Presbyterian Medical Center and Pennsylvania Hospital
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Senior Fellow, Leonard Davis Institute for Health Economics (LDI), University of Pennsylvania, Philadelphia, PA
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Division of Trauma Representative to UPHS Airway Safety Committee, UPHS Airway Safety Committee
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Senior Scholar, Center for Perioperative Outcomes Research and Transformation (CPORT) at the University of Pennsylvania
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Associate Program Director, Surgical Critical Care and Acute Care Surgery Fellowships, Division of Traumatology, Surgical Critical Care and Emergency Surgery
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Director, Penn Trauma International Program, Division of Traumatology, Surgical Critical Care and Emergency Surgery,
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Department of Surgery
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Medical Director, Surgical Intensive Care Unit, Pennsylvania Hospital
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Associate Fellow, Center for Clinical Epidemiology and Biostatistics (CCEB) at the University of Pennsylvania
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Director, Center for Emergency Surgical Outcomes Research (CESOR)
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Faculty Search Advisor, University of Pennsylvania, Perelman School of Medicine, Department of Surgery
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Department: Surgery
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Contact information
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Division of Traumatology, Emergency Surgery & Surgical Critical Care
28 Penn Presbyterian Medical Center
40 51 N 39th Street; Mailbox 118
Philadelphia, PA 19104
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28 Penn Presbyterian Medical Center
40 51 N 39th Street; Mailbox 118
Philadelphia, PA 19104
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Office: 215-662-8819
32 Fax: 215-243-4679
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32 Fax: 215-243-4679
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Publications
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Links
10f Search PubMed for articles
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10f Search PubMed for articles
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Education:
21 8 BSc 17 (Physiology) c
43 University College Dublin, Dublin, Ireland, 2001.
21 8 MSc 18 (Physiology ) c
43 University College Dublin, Dublin, Ireland, 2005.
21 7 MD 15 (Medicine) c
4e Royal College of Surgeons in Ireland, Dublin, Ireland, 2008.
21 a PgDip 1c (Trauma Sciences) c
51 Queen Mary, University of London, London, United Kingdom, 2016.
21 b PGCert 22 (Healthcare Management) c
43 University College Dublin, Dublin, Ireland, 2017.
21 9 eMBA 24 (Business Administration) c
43 Quantic School of Business, Washington, DC, 2019.
21 9 CCEB 34 (Clinical Epidemiology and Biostatistics) c
45 University of Pennsylvania, Philadelphia, PA, 2021.
21 8 PhD 1e (Surgical Sciences) c
3a Orebro University, Orebro, Sweden, 2024.
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Permanent link21 8 BSc 17 (Physiology) c
43 University College Dublin, Dublin, Ireland, 2001.
21 8 MSc 18 (Physiology ) c
43 University College Dublin, Dublin, Ireland, 2005.
21 7 MD 15 (Medicine) c
4e Royal College of Surgeons in Ireland, Dublin, Ireland, 2008.
21 a PgDip 1c (Trauma Sciences) c
51 Queen Mary, University of London, London, United Kingdom, 2016.
21 b PGCert 22 (Healthcare Management) c
43 University College Dublin, Dublin, Ireland, 2017.
21 9 eMBA 24 (Business Administration) c
43 Quantic School of Business, Washington, DC, 2019.
21 9 CCEB 34 (Clinical Epidemiology and Biostatistics) c
45 University of Pennsylvania, Philadelphia, PA, 2021.
21 8 PhD 1e (Surgical Sciences) c
3a Orebro University, Orebro, Sweden, 2024.
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Description of Clinical Expertise
55 Surgical Critical Care, Emergency General Surgery, and Trauma Surgery62
Description of Other Expertise
93 Google Scholar List of Publications: https://scholar.google.com/citations?hl=en&user=qjKBYO0AAAAJ&view_op=list_works&sortby=pubdate65
Description of Research Expertise
1df Prospective multi-center observational cohort studies, randomized control trials and retrospective surgical outcomes observational studies in Emergency General Surgery, Surgical Critical Care and Trauma Surgery. Causal Inferential Methods. Clinical Epidemiology. Leveraging targeted trial emulation surgical outcomes research, as it intersects with mixed-methods implementation science to better inform data-driven clinician decision support and patient outcomes.e 29
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146 Santos Carlin P, Kaplan LJ, Katz E, Kauffman A, Coons M, Bele P, Culkin M, Georges A, Augustin D, Meaney D, Smith D, Bass GA, Pascual JL.: TXA after severe TBI: Learning and memory benefits are prominent only in males. J Trauma Acute Care Surg Jan 2026.
ee Bass GA, McLaughlin CJ, Kaplan LJ, Lee MJ.: Dogma, data, and decision-making: a history of treatment for small-bowel obstruction. World J Emerg Surg 21: 7, Jan 2026.
123 Duffy CC, Bass GA, Kaplan LJ, Bonafide CP, O'Sullivan EP, Baker PA.: From rare procedure to institutional capability: embedding systematic training and adoption of emergency front of neck access. Br J Anaesth Oct 2025.
1aa Matteo Maria Cimino, Gary Alan Bass, Hayato Kurihara, Gabriele Bellio, Matteo Porta, Luigi Cayre, Shahin Mohseni, Matthew J Lee, Lewis J Kaplan and Isidro Martinez-Casas for the ESTES SnapSBO Group : Management and Outcome Variability in Hernia-Related Small bowel obstruction: Insights from SnapSBO. BJS Open September 2025 Notes: Corresponding Author.
13d McLaughlin C, Kaplan LJ, Martinez-Casas I, Mohseni S, Cimino M, Kurihara H, Lee MJ, Bass GA.: Initial adhesive small bowel obstruction management pathway drives infectious complication occurrence. Surg Infect (Larchmt) 26(7): 561-567, Sep 2025.
1ab Martinez-Casas I, Kaplan LJ, Garcia Sánchez CJ, Pareja Ciuró F, Cimino M, Kurihara H, Lee MJ, Mohseni S, Bass GA; SnapSBO Collaborators.: Preoperative factors influence technique selection in surgical management of small bowel obstruction: findings from the SnapSBO multinational prospective observational study. Surg Endosc 39(9): 7652-7664, Sep 2025.
227 Bath MF, Amoako J, Kohler K, Hashi AS, Zhang Z, Baderhabusha DU, Cáceres E, Nuño-Guzmán CM, Marsden M, Carenzo L, Khajanchi M, Saleh R, Edmiston T, Hammer C, Hobbs L, Smith BG, Hutchinson P, Weiser TG, Perkins ZB, Hardcastle TC, Bashford T; GOAL-Trauma Collaborative.: Global variation in patient factors, interventions, and postoperative outcomes for those undergoing trauma laparotomy: an international, prospective, observational cohort study. Lancet Glob Health Sep 2025.
1a0 Santos Carlin P, Coons M, Bele P, Kaplan LJ, Culkin M, Georges A, Jacovides CL, Martinez-Quinones P, Meaney D, Kauffman A, Smith D, Bass GA, Pascual JL.: Sex-related differences in cognition after severe murine traumatic brain injury: A Morris water maze study evaluating learning and memory. J Trauma Acute Care Surg 98(6): 883-891, Jun 2025.
121 El Boghdady M, Hardie J, Brennan PA; TED Collaborative Group.: Theatre etiquette Delphi: the development of a guide on professional conduct and best practices in operating environments. Ann R Coll Surg Engl Jun 2025.
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Selected Publications
14e NIHR Global Health Research Unit on Global Surgery.: 30-day postoperative mortality and the effects of hospital preparedness during the COVID-19 pandemic: a pooled analysis of prospective international cohort studies. Lancet Reg Health Eur 62: 101566, Jan 2026.146 Santos Carlin P, Kaplan LJ, Katz E, Kauffman A, Coons M, Bele P, Culkin M, Georges A, Augustin D, Meaney D, Smith D, Bass GA, Pascual JL.: TXA after severe TBI: Learning and memory benefits are prominent only in males. J Trauma Acute Care Surg Jan 2026.
ee Bass GA, McLaughlin CJ, Kaplan LJ, Lee MJ.: Dogma, data, and decision-making: a history of treatment for small-bowel obstruction. World J Emerg Surg 21: 7, Jan 2026.
123 Duffy CC, Bass GA, Kaplan LJ, Bonafide CP, O'Sullivan EP, Baker PA.: From rare procedure to institutional capability: embedding systematic training and adoption of emergency front of neck access. Br J Anaesth Oct 2025.
1aa Matteo Maria Cimino, Gary Alan Bass, Hayato Kurihara, Gabriele Bellio, Matteo Porta, Luigi Cayre, Shahin Mohseni, Matthew J Lee, Lewis J Kaplan and Isidro Martinez-Casas for the ESTES SnapSBO Group : Management and Outcome Variability in Hernia-Related Small bowel obstruction: Insights from SnapSBO. BJS Open September 2025 Notes: Corresponding Author.
13d McLaughlin C, Kaplan LJ, Martinez-Casas I, Mohseni S, Cimino M, Kurihara H, Lee MJ, Bass GA.: Initial adhesive small bowel obstruction management pathway drives infectious complication occurrence. Surg Infect (Larchmt) 26(7): 561-567, Sep 2025.
1ab Martinez-Casas I, Kaplan LJ, Garcia Sánchez CJ, Pareja Ciuró F, Cimino M, Kurihara H, Lee MJ, Mohseni S, Bass GA; SnapSBO Collaborators.: Preoperative factors influence technique selection in surgical management of small bowel obstruction: findings from the SnapSBO multinational prospective observational study. Surg Endosc 39(9): 7652-7664, Sep 2025.
227 Bath MF, Amoako J, Kohler K, Hashi AS, Zhang Z, Baderhabusha DU, Cáceres E, Nuño-Guzmán CM, Marsden M, Carenzo L, Khajanchi M, Saleh R, Edmiston T, Hammer C, Hobbs L, Smith BG, Hutchinson P, Weiser TG, Perkins ZB, Hardcastle TC, Bashford T; GOAL-Trauma Collaborative.: Global variation in patient factors, interventions, and postoperative outcomes for those undergoing trauma laparotomy: an international, prospective, observational cohort study. Lancet Glob Health Sep 2025.
1a0 Santos Carlin P, Coons M, Bele P, Kaplan LJ, Culkin M, Georges A, Jacovides CL, Martinez-Quinones P, Meaney D, Kauffman A, Smith D, Bass GA, Pascual JL.: Sex-related differences in cognition after severe murine traumatic brain injury: A Morris water maze study evaluating learning and memory. J Trauma Acute Care Surg 98(6): 883-891, Jun 2025.
121 El Boghdady M, Hardie J, Brennan PA; TED Collaborative Group.: Theatre etiquette Delphi: the development of a guide on professional conduct and best practices in operating environments. Ann R Coll Surg Engl Jun 2025.
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