Maria A. Thomas, MD, PhD

Maria A. Thomas, MD, PhD

Radiation Oncologist

Primary Academic Title

Associate Professor of Radiation Oncology, Washington University School of Medicine

Clinical Expertise

Breast cancer, radiation oncology, image-guided radiation therapy (IGRT), MRI-guided radiation therapy (MR-IGRT), accelerated partial breast radiation, lymphoma, cutaneous lymphoma

Research Interest

Reduction of cardiac radiation exposure during radiation therapy for breast cancer.


  • 2006: PhD, philosophy, Saint Louis University, St. Louis
  • 2008: MD, Saint Louis University


  • 2008 - 2009: Intern, St. John's Mercy Medical Center, St. Louis
  • 2009 - 2013: Resident, radiation oncology, Washington University, St. Louis

Board Certification

  • 2014: American Board of Radiology, Radiation Oncology

Contact Information

  • Washington University Medical Campus

    4921 Parkview Place
    Saint Louis, MO 63110

  • South St. Louis County

    5225 Midamerica Plaza
    St. Louis, MO 63129

Phone Numbers

Request an appointment