Jennifer De Los Santos, MD, FASTRO

Radiation Oncologist

Jennifer De Los Santos

Appointment Options

Whether you’re seeking a new patient appointment or exploring treatment options and looking for a second opinion, our Siteman care coordinators are ready to assist you.

My Locations

Center for Advanced Medicine

Center for Advanced Medicine

On WashU Medicine Campus
4921 Parkview Place, Saint Louis, MO 63110
Gary C. Werths Building at Siteman Cancer Center

Gary C. Werths Building at Siteman Cancer Center

On WashU Medicine Campus
4500 Forest Park Avenue, Saint Louis, MO 63108

Expertise & Training

Clinical Expertise

  • Head and Neck Cancers

Primary Academic Title

Professor of Radiation Oncology, WashU Medicine

Board Certification

  • 2001: American Board of Radiology

Training

  • 1995 - 1996: Internship, Surgery and Medicine, University of Texas, Lyndon B. Johnson Hospital, Houston, TX
  • 1996 - 2001: Residency, Radiation Oncology, University of Texas, MD Anderson Cancer Center, Houston, TX

Education

  • 1991: BA, Emory University, Atlanta, GA
  • 1995: MD, University of Florida College of Medicine, Gainesville, FL

Research & Selected Publications

Research Interest

Throughout my career, my research has focused on paradigm shifting clinical trial concepts, initially in gynecologic and breast malignancies and more recently in head and neck cancer with a focus on treatments and interventions that not only prolong survival but improve quality of life.

Research Publications

Breast Tumor-Bed Biopsy for Pathological Complete Response Prediction: The NRG-BR005 Nonrandomized Clinical Trial
Authors:

Basik M, Cecchini RS, De Los Santos JF, one or more additional authors omitted Wolmark N

Journal & Year:

JAMA Surg | 2025

Novel Postneoadjuvant Prognostic Breast Cancer Staging System
Authors:

Winchester DJ, Singh L, Edge SB, one or more additional authors omitted De Los Santos JF, one or more additional authors omitted Hortobagyi GN

Journal & Year:

J Clin Oncol | 2025