Dennis Hallahan, MD

Dennis Hallahan, MD

Radiation Oncologist

Primary Academic Title

Elizabeth H. and James S. McDonnell III Distinguished Professor in Medicine and Chairman, Department of Radiation Oncology, Washington University School of Medicine

Clinical Expertise

Breast cancer, brain tumors, leukemia, lymphoma, lung cancer

Research Interest

Nanoparticle development for targeted drug delivery to radiation-inducible receptors. Molecular targeted radiation protection through inhibition of apoptosis in the brain, intestine and bone marrow stem cells. Molecular targeted radiation sensitizers are also developed through partnerships with industry. Molecular imaging of cancer response, including peptides that detect tumor-infiltrating lymphocytes.


  • 1984: MD, Rush University, Chicago


  • 1984 - 1986: Intern and resident, internal medicine, University of Chicago
  • 1986 - 1989: Resident, radiation oncology, University of Chicago
  • 1989 - 1990: Research fellow, radiation and cellular oncology, University of Chicago

Board Certification

  • 1989: American Board of Radiology, Radiation Oncology

Contact Information

  • Washington University Medical Campus

    4921 Parkview Place
    Saint Louis, MO 63110

Phone Numbers

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