People Directory

Thomas Bortfeld, PhD

Chief of Physics Division
Andres Soriano Professor of Radiation Oncology
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Massachusetts General Hospital
Department of Radiation Oncology
100 Blossom Street
Boston, MA 02114
(617) 724-1180

Education and Degrees

MS (Diploma): University of Heidelberg , Germany, 1988, Physics
Ph.D.: University of Heidelberg , Germany, 1990, Applied Physics
Habilitation: University of Heidelberg, Germany, 1995, Physics

Current Areas of Interest

  • Transforming tumor target definition from an art to a science
  • Optimal stopping in radiation therapy (OSRT)
  • Democratizing proton therapy

Recent Honors

Alfred Breit Award, DEGRO (German Society for Radiation Oncology), 2015 (For work on IMRT)

Science Award: Research Networks, Fraunhofer Society, 2016 (For work on multi-criteria optimization in radiation therapy, with colleagues from Fraunhofer ITWM) 

Honorary Professor, University of Freiburg, Germany, 2017

Glocker Medal, DGMP (highest award of the German Medical Physics society), 2018 

Elected Member, German National Academy of Sciences (Leopoldina), 2021

Honorary Member (for outstanding scientific contributions), European Society for Radiotherapy and Oncology, 2022 

Endowed Chair, Harvard Medical School, 2022

Recent Keynote Lectures

CARO-COMP-CAMRT joint scientific meeting, Montreal, Canada, opening keynote, 2018 

EPSM, Engineering & Physical Scientists in Medicine Conference, Perth, Australia, 2019

SSRMP, Swiss Society of Radiobiology and Medical Physics, PSI Villigen, Switzerland, 2019

Review Talks

Harvard Applied Physics Colloquium: Physics against Cancer 

In the News

  1. A pioneering approach to cancer treatment

  2. Targeting tumours

  3. Proton therapy teams up with PET imaging

  4. Fighting cancer with mathematics


See the Harvard Catalyst for an up-to-date list.  

Located in: Leadership | Research | Lab Heads