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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 279 Ratings 53 Comments


I think everything went very well.


use of Cape Coral office


Well, it's hard to respond to this thing that it was unexpected, that I was going to get this call. However, when you have health issues that are particular to male of my age. Or for any age for that matter. It's kind of hard to interpret and assimilate, everything. Even though the professional provider might do their best to do that for you. So, I have no problems at all with Dr. Mantz attempts to. You know, give me the information that I need it to make decisions about things. But some out there just seems to be the possibility for certain things, being caught and being lost in translation or in the loop in general. Anyway, I don't know, I just don't


Everyone was very friendly and showed care.

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