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Joshua Hermsen, MD

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Joshua Hermsen, MD

Assistant Professor
Division of Cardiothoracic Surgery


  • MD, Medical University of South Carolina, 2004
  • General Surgery Residency, University of Wisconsin Madison, Madison, WI
  • Cardiothoracic Surgery Fellowship, University of Washington Medical Center, Seattle, WA
  • Congenital Cardiac Surgery Fellowship, Seattle Children’s Hospital, Seattle, WA

Clinical Specialties

Dr. Hermsen specializes in the care of patients of all ages with congenital heart disease ranging from repairs in the neonatal period to multiple re-do operations and transplants in adult patients of all ages. He also has interest and expertise in treating patients with hypertrophic cardiomyopathy complicated by obstruction of the left ventricular outflow tract, mitral valve problems and heart rhythm problems. He also has extensive experience in treating patients with congenital and acquired heart disease complicated by infectious endocarditis.

Research Interests

Dr. Hermsen’s research interests focus on demonstrating utility of medical 3D printing related to septal myectomy surgery and examining the effects of using cardiac surgical simulation for resident education.

Recent Publications
  • Durable mechanical circulatory support in teenagers and adults with congenital heart disease: A systematic review.
    Steiner JM, Krieger EV, Stout KK, Stempien-Otero A, Mahr C, Mokadam NA, Hermsen JL
    Int. J. Cardiol. 2017 Oct 15; 245():135-140.
    [PubMed ID: 28781147, PMC ID: 5667943]
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  • No free lunch: Even with a diet heavy on PEARS.
    Hermsen JL, Ripley B
    J. Thorac. Cardiovasc. Surg. 2017 Jul; 154(1):80.
    [PubMed ID: 28633215]
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  • Progress comes in small steps.
    Hermsen JL, Mokadam NA, Verrier ED
    J. Thorac. Cardiovasc. Surg. 2017 Jun; 153(6):1438.
    [PubMed ID: 28526105]
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  • Sinus of Valsalva Aneurysm Rupture Misdiagnosed as a Ventricular Septal Defect.
    Togashi K, Hermsen JL, Joffe DC
    Anesth. Analg. 2017 May; 124(5):1437-1439.
    [PubMed ID: 27622721]
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  • Hey! Teacher! Leave Them Kids Alone!
    Hermsen JL, Mokadam NA
    Semin. Thorac. Cardiovasc. Surg. 2017; 29(1):23-24.
    [PubMed ID: 28683991]
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  • Flipping the classroom: Case-based learning, accountability, assessment, and feedback leads to a favorable change in culture.
    Mokadam NA, Dardas TF, Hermsen JL, Pal JD, Mulligan MS, Jacobs LM, Wood DE, Verrier ED
    J. Thorac. Cardiovasc. Surg. 2017 Apr; 153(4):987-996.e1.
    [PubMed ID: 28088430]
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  • 3D printing from MRI Data: Harnessing strengths and minimizing weaknesses.
    Ripley B, Levin D, Kelil T, Hermsen JL, Kim S, Maki JH, Wilson GJ
    J Magn Reson Imaging 2017 Mar; 45(3):635-645.
    [PubMed ID: 27875009]
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  • Scan, plan, print, practice, perform: Development and use of a patient-specific 3-dimensional printed model in adult cardiac surgery.
    Hermsen JL, Burke TM, Seslar SP, Owens DS, Ripley BA, Mokadam NA, Verrier ED
    J. Thorac. Cardiovasc. Surg. 2017 Jan; 153(1):132-140.
    [PubMed ID: 27650000]
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  • Successful Repair of Acute Type A Aortic Dissection 15 Years Following Bilateral Lung Transplantation.
    Hermsen JL, Madathil R, Berfield KS, Li K, Smith JW, Mulligan MS
    J Card Surg 2016 Jan; 31(1):72-3.
    [PubMed ID: 26585692]
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  • Acute bioprosthetic mitral valve thrombosis.
    Madathil R, Togashi K, VonHomeyer P, Hermsen JL
    Intensive Care Med 2016 Jun; 42(6):1073-4.
    [PubMed ID: 26585789]
    More Information Copyright © 2017 The Board of Regents of the University of Wisconsin System