Zachary Klaassen

Program Director

Zachary Klaassen

Program Director

Associate Professor

Academic Appointment(s)

Medical College of Georgia
Department of Surgery: Urology

Medical College of Georgia
Department of Urology

  • (706) 721-2519
  • BA 8412


  • MD, Medicine St. George University, 2010


  • PHY GA Medical Board, 2018

  • PHY GA Medical Board, 2018

  • PHY GA Medical Board, 2011

Awards & Honors

  • Best Reviewer Journal of Urology, 2019

  • Outstanding Young Clinical Scientist, Distinguished Faculty Recognition Award Augusta University, 2018

  • Star Reviewer Urologic Oncology, 2018

  • Star Reviewer Urologic Oncology, 2017

Courses Taught Most Recent Academic Year

  • SURG 5352

    Urologic Research: Urology Research
  • SURG 5350

    Urology Externship
  • SURG 5000

    Basic Clkshp in SURG
  • SURG 5007

    Surgery Sub-I: Surgery Sub-I Urology
  • RURO 5000


Teaching Interests



Selected Recent Publications

  • 245. Wallis CJ, Jerath A, Ikesu R, Satkunasivam R, Dimick JB, Orav Ej, Maggard-Gibbons M, Li R, Salles A, Klaassen Z, Coburn N, Bass BL, Detsky AS, Tsugawa Y. Association between patient-surgeon gender concordance and mortality after surgery in the United States: Retrospective observational study. BMJ. 2023 Nov 22;383e075484., 2023
    Journal Article, Academic Journal
  • 242. Wallis CJD, Jerath A, Aninoltejari K, Kaneshwaran K, Salles A, Coburn N, Wright FC, Gotlib Conn L, Klaassen Z, Luckenbaugh AN, Ranganathan S, Riveros C, McCartney C, Armstrong K, Bass B, Detsky AS, Satkunasivam R. Surgeon Sex and Long-Term Postoperative Outcomes Among Patients Undergoing Common Surgeries. JAMA Surg. 2023 Nov 1;158(11):1185-1194, 2023
    Journal Article, Academic Journal
  • 244. Dynamus K, Friedrich NA, Howard LE, Oyekunle T, De Hoedt AM, Labadzhyan A, Polascik T, Klaassen Z, Freedland SJ. Are higher follicle-stimulating hormone levels before androgen deprivation therapy for prostate cancer associated with oncological and cardiac outcomes and overall survival? – A population-level analysis. Trans Androl Urol. 2023 Oct 31;12(10):1540-1549., 2023
    Journal Article, Academic Journal
  • 241. Riveros C, Ranganathan S, Huang E, Ordonez A, Xu J, Geng M, Miles BJ, Esnaola N, Klaassen Z, Jerath A, Kim SJ, Wallis CJD, Satkunasivam R. Glomerular hyperfiltration is an independent predictor of postoperative outcomes: A NSQIP multi-specialty surgical cohort analysis. Nephrology (Carlton). 2023 Oct;28(10):548-556. , 2023
    Journal Article, Academic Journal
  • 240. Sergeyev A, Gu L, De Hoedt AM, Amling CL, Aronson WJ, Cooperberg MR, Kane CJ, Klaassen Z, Terris MK, Guerrios-Rivera L, Freedland SJ, Csizmadi I. Diabetes and prostate cancer outcomes in men with nonmetastatic castration-resistant prostate cancer: Results from the SEARCH cohort. Cancer Epidemiol Biomarkers Prev. 2023 Sep 1:32(9):1208-1216, 2023
    Journal Article, Academic Journal

College Service

  • Faculty Recognition Committee 2020 - 2022

    Role: Committee Member
  • Medical School Admissions 2016 - 2018

    Role: Committee Member

Professional Service

  • European Urology 2018 - Present

    Role: Editorial Review Board Member
  • Augusta University 2019 - 2022

    Role: Reviewer, Grant Proposal
  • European Urology 2019 - 2022

    Role: Editor
  • Psycho-Oncology 2019 - 2022

    Role: Reviewer, Journal Article
  • Young Urologic Oncologists 2019 - 2022

    Role: Committee Member

Public Service

  • 100 Black Men of Augusta 2021 - Present

    Role: Guest Speaker
  • River Ridge Elementary School Horizons Program 2019 - 2022

    Role: Guest Speaker
  • Augusta University 2012 - 2013

    Role: Program Organizer