Mark R Hemmila
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About
Dr. Hemmila is a General Surgeon in the Division of Acute Care Surgery at Michigan Medicine. He serves as the Medical Director for Adult Trauma and also as the Associate Chief Medical Information Officer for Surgery. His clinical practice includes:
General Surgery
Trauma Surgery
Burn Surgery
Critical Care
Center Memberships
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Center MemberWeil Institute for Critical Care Research
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Center MemberInstitute for Healthcare Policy and Innovation
Research Overview
Dr. Hemmila’s research focuses on comparative effectiveness evaluation of care provided for trauma and acute care surgery. He serves as the Medical Director for the Blue Cross and Blue Shield funded Michigan Trauma Quality Improvement Program (MTQIP) and Michigan Acute Care Surgery (MACS) Quality Improvement Collaboratives. He also provides expertise for the State of Michigan Department of Health and Human Services’ Michigan Statewide Trauma System, the U-M International Center for Automotive Medicine (ICAM), and the Max Harry Weil Institute for Critical Care Research & Innovation. He actively mentors residents and junior faculty members engaged in research.
Recent Publications
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Mullens CL, Norton EC, Cain-Nielsen AH, Johnson PL, Jean RA, Janczyk RJ, Hemmila MR. Surgery United States, 2026 Jun 1; 194:Journal ArticleIntroduction to entropy balancing: A case study on the association between statin therapy and outcomes after traumatic injury
DOI:10.1016/j.surg.2026.110162 PMID: 41905257 -
Hunter MA, Chowanic A, Biziorek J, Fan Z, Sangji NF, Suwanabol PA, Hemmila MR. J Burn Care Res, 2026 Apr 11;Journal ArticlePredictors of Discharge Disposition in Older Adults with Burn Injury: A Nationwide Emergency Department Analysis.
DOI:10.1093/jbcr/irag052 PMID: 41968349 -
Blake ES, Kurth AE, Dougherty JM, Rittle CJ, Fan Z, Hemmila MR, Sangji NF. J Burn Care Res, 2026 Mar 4; 47 (2): 547 - 557.Journal ArticleRegional Differences in Inpatient Adult Burn Etiology Across the United States.
DOI:10.1093/jbcr/iraf193 PMID: 41051354 -
Johnson PL, Picart JK, Hallway AK, Mullens CL, Levy SC, Hemmila MR, Jean RA. J Am Coll Surg, 2026 Mar 2;Journal ArticleDownstream Medical Cost of Repealing Universal Motorcycle Helmet Laws.
DOI:10.1097/XCS.0000000000001870 PMID: 41769898 -
Johnson PL, Mullens CL, Picart JK, Martin TD, Jean RA, Napolitano LM, Hemmila MR. Journal of the American College of Surgeons, 2026 Mar 1; 242 (3): 599 - 607.Journal ArticleFenestrating or Reconstituting? The Impact of Subtotal Cholecystectomy Technique on Postoperative Outcomes and Subsequent Procedures
DOI:10.1097/XCS.0000000000001651 PMID: 41051080 -
Levy SC, Johnson PL, Mullens CL, Gerhardinger LJ, Jean RA, Hemmila MR. J Am Coll Surg, 2026 Feb 16;Journal ArticleImpact of Chronic Immunosuppression on Emergency General Surgery Outcomes.
DOI:10.1097/XCS.0000000000001855 PMID: 41696911 -
Scott JW, Becker NV, Hemmila MR, Kunnath N, Ayanian JZ, Mark FA, Ryan AM, Dimick JB. Health Affairs, 2026 Feb 1; 45 (2): 154 - 163.Journal ArticleChanges In Medical Debt And Bankruptcy After Acute Traumatic Injuries, 2019–21
DOI:10.1377/hlthaff.2025.00847 PMID: 41628389 -
Jean RA, Waljee AK, Makar M, Tignanelli CJ, Hemmila MR, Dimick JB. American Journal of Surgery, 2026 Feb 27;Journal ArticleCan Artificial Intelligence and Machine Learning help us improve motor vehicle crash trauma triage?
DOI:10.1016/j.amjsurg.2025.116810
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