Dr. Constantine Mantz

Constantine A. Mantz

Constantine A. Mantz
Constantine A.
Radiation Oncologist

Languages spoken

English, French, Greek

Expert in

Prostate cancer, Breast cancer



Cape Coral (Radiation oncology)
Cape Coral (Radiation oncology)

1419 SE 8th Terrace
Cape Coral, Florida 33990

26.637481692053825, -81.94329415092336

Dr. Mantz joined GenesisCare in 2000 and serves as its Chief Policy Officer and Chief Physician Executive. He formerly served as Chief Medical Officer and Senior Vice President of Clinical Operations. As an area expert, he leads GenesisCare's focus on studying and treating prostate and breast cancer.

He is board-certified in Radiation Oncology by the American Board of Radiology. Dr. Mantz received his Bachelor of Science in Biology from the Loyola University of Chicago, IL, and his medical degree from the University of Chicago Pritzker School of Medicine, Chicago, IL.

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

Professional associations

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
  • A Medicare Claims Analysis of Racial and Ethnic Disparities in the Access to Radiation Therapy Services. View publication
  • 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).


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)


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



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



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



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



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



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



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



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



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



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



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



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



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



Contantine A. Mantz, 2016, ASTRO



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



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



Mantz, Constantine, 2017, ACRO



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



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



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



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



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



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



Constantine Mantz, 2019, ASTRO



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


In the media

In the media

Immunotherapy costs drive Medicare spending increase for end-of-life cancer care

April 14, 2023

View publication

MRIdian® by Viewray: Cancer treatment in Fort Myers

MRIdian® by Viewray: Cancer treatment in Fort Myers

MRIdian® is the first MR-guided radiotherapy system with peer-reviewed evidence demonstrating reduced side effects and extended survival by decreasing treatment volumes and delivering ablative doses.

Your treatment will be provided by Dr. Constantine Mantz, one of our leading radiation oncologists who is specially trained to provide radiation therapy using the MRIdian®. They’ll work with a team who are also experts in this kind of advanced radiation therapy to review your referral and create a personalized treatment plan tailored to your needs.

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