Dr. Constantine A. Mantz

  • MD
  • Radiation Oncologist
  • Spoken languages English, French, Greek


Career Positions

Current position(s)

  • GenesisCare - Chief Medical Officer and Radiation Oncologist, Fort Myers, FL



  • Loyola University of Chicago, BS, Biology, Chicago, IL
  • University of Chicago Pritzker School of Medicine, Chicago, IL


  • University of Chicago Hospitals, Radiation Oncology, Chicago, IL


  • Hennepin County Medical Center, General Surgery, Minneapolis, MN

Expertise And Interests


  • Prostate, Breast, Lung, Colorectal, Head and Neck Malignancies


Awards and honors

  • Previously chief Medical Officer for 21st Century Oncology, Numerous Radiation Therapy Research Projects Publishing Peer Reviewed Articles in Professional Publications


  • Survey of current practices from an international task force for gynecological stereotactic ablative radiotherapy
  • The ASTRO Perspective on "Impact of Patient Stage and Disease Characteristics on the Proposed Radiation Oncology Alternative Payment Model (RO-APM) at a Large Academic Cancer Center"
  • Long-term Outcomes of Stereotactic Body Radiotherapy for Low-Risk and Intermediate-Risk Prostate Cancer
  • Long-term Outcomes of Stereotactic Body Radiotherapy for Low-Risk and Intermediate-Risk Prostate Cancer.
  • Multi-institutional Analysis of Prostate-Specific Antigen Kinetics Following Stereotactic Body Radiotherapy (SBRT).
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Pragmatic test of amino acid mixture/enterade ® for Gastrointestinal Toxicity in Cancer therapy

Steven Finkelstein, Constantine Mantz, Laura Luque, Paul Okunieff, 2017, Multinational Association of Supportive Care in Cancer (MASCC)

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R. Allison, D. Remonde, S. Salenius, A. Hnatov, C. Ballenger, C. Mantz, E. Fernandez, S. Finkelstein, 2016, ESTRO

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Eduardo Fernandez, Marshal Lieberfarb, Anesa Ahamad, Jeffrey Forman, Sharon Salenius, Rudi Ross, Constantine Mantz, 2017, ACRO

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G.Olivera, S.Mo., S.Key, D.Parnell, Y.Chen, G.Fordyce, E.Fernandez, C.Mantz, S.Finkelstein, D.Galmarini, 2015, Varian Research Partnership Symposium

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Dioval A. Remonde, BS, Ron R. Allison,MD, Sharon A. Salenius, MPH, Andrej Hnatov, MD, Cynthia Ballenger, MD, Constantine A. Mantz, MD, Eduardo Fernandez,MD,PhD, Steven E. Finkelstein,MD, 2015, ARS

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Francisco A. Myslicki, Jesse Shulman, Sharon Salenius, Neal Shore, Constantine Mantz, Eduardo Fernandez, Steven E. Finkelstein, 2015, ARS

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D. A. Hamstra, N. F. Mariados, D. K. Shah, S. M. Kurtzman, J. E. Sylvester, S. H. Zimberg, R. S. Hudes, L. Karsh, M. D. Logsdon, D. C. Beyer, M. Kos, R. A. Hsi, K. Forsythe, E. M. Soffen, P. M. Francke, H. Zhang, T. L. DeWeese, R. J. Ellis II, C. A. Mantz, W. R. Bosch, and J. M. Michalski;, 2016, ASTRO

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Finkelstein SE, Salenius S, Cross CK, Allison RR, Shafman T, Mantz C, Fernandez E, 2016, ASCO

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Johnson SB, Soulos PR, Shafman TD, Mantz CA, Ross R, Finkelstein SE, Collins SP, Suy S, Brower JV, Ritter MA, King CR, Kupelian PA, Horwitz EM, Pollack A, Abramowitz MC, Hallman MA, Faria S, Gross CP, Yu JB, 2016, ASTRO

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Finkelstein SE, Forman J, Fernandez E, Chen C, Lieberfarb M, Salenius SA, Shafman T, and Mantz CA, 2016, ASTRO

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Martinez A, Olivera G, Ghilezan M, Forman J, Kestin L, Finkelstein S, Mo X, Key S, Mantz C, Fernandez E, Galmarini D, et al., 2015, ASTRO Annual Meeting

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Allison R, Salenius SA, Hnatov A, Ballenger D, Lichtblau D, Mantz CA, Fernandez E, Finkelstein SE, 2015, ASTRO Annual Meeting

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Mantz CA, Abu Shahin F, Sandadi S, Orr J., 2015, ASTRO Annual Meeting

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Kestin L, Fernandez E, Mantz C, Olivera G, Mo X, Key S, Finkelstein SE, Martinez A, Galmarini D., 2015, ASTRO Annual Meeting

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Contantine A. Mantz, 2016, ASTRO

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Daniel A. Hamstra, Dhiren Shah, Steven Kurtzman, John Sylvester, Shawn H. Zimberg, Richard S. Hudes, LawrenceIvan Karsh, Mark D. Logsdon, David Beyer, Michael Kos, R. Alex Hsi, Kevin Forsythe, Edward M Soffen, Patrick MFrancke, Hong Zhang, Theodore L. DeWeese, Rodney J. Ellis, Jeffrey Bogart, Constantine Mantz, Neil Mariados, 2017, Genitourinary Cancers Symposium

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Mantz Constantine, Wallner Paul, Fernandez Eduardo B., Salenius Sharon, 2017, AAPM Spring Clinical Meeting

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Mantz, Constantine, 2017, ACRO

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Ron R. Allison, Sharon A. Salenius, Andrej Hnatov, Cynthia Ballenger, Anesa Ahamad, Constantine A. Mantz, Eduardo Fernandez, Steven E. Finkelstein, 2016, American Radium Society 100th Anniversary Meeting

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Myslicki FA, Salenius SA, Shore ND, Mantz CA, Fernandez E, Finkelstein SE, 2015, ACRO Annual Meeting

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A.T. Dang, C.R. King, D. Shabsovich, C.A. Mantz, K.L. Stephans, D.A. Loblaw, P. Cheung, M. Scorsetti, L. Cozzi, A.S. DeNittis, Y. Wang, N. Nickols, P.A. Kupelian, M.L. Steinberg, A.U. Kishan, 2018, ASTRO

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N. Jiang, C.R. King, A.T. Dang, Y. Yuan, S.P. Collins, S. Suy, C.A. Mantz, L. Miszczyk, A. Napieralska, A. Namysl-Kaletka, N.G. Nickols, D. Shabsovich, M.L. Steinberg, P.A. Kupelian, A.U. Kishan, 2018, ASTRO

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A.U. Kishan, A. Katz, C.A. Mantz, F.I. Chu, L. Appelbaum, D.A. Loblaw, I.D. Kaplan, H.T. Pham, M.K. Buyyounouski, D.B. Fuller, R. Meier, S.P. Collins, N. Shaverdian, A.T. Dang, Y. Yuan, H.P. Bagshaw, N.D. Prionas, N. Nickols, M.L. Steinberg, C.R. King, 2018, ASTRO

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Naomi Jiang, Jessica Wong, Eric Horwitz, Richard Stock, Sean Collins, Simeng Suy, Constantine Mantz, Alan Katz, Leszek Miszczyk, Hilary Bagshaw, Nicolas Prionas, Mark Buyyounouski, Nicholas Zaorsky, Nicholas Nickols, Christopher King, Michael Steinberg, Patrick Kupelian, D. Jeffrey Demanes, Amar Kishan, 2019, ASTRO

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Constantine Mantz, 2019, ASTRO

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Lawrence I Karsh, Andrew J Armstrong, Christopher Pieczonka, Shaker Dakhil, Jeffrey Vacirca, Nicholas J Vogelzang, Raoul S Concepcion, James Bailen, Constantine Mantz, Ronald F Tutrone, Nancy N. Chang, Hong Tang, Bruce Brown, Mark C Scholz, 2019, AUA

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Constantine Mantz's Reviews


based on 196 Ratings 55 Comments


Non it was good


Why change something when nothing is broken? Great doctor and staff. They work as a team and I had minimal waiting. Doctor Mantz is easy to talk with and very knowledgeable about my medical issues.




There are signs on the door about social distancing, but patients in the waiting room ignored them. May spacing out the chairs would help.

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