Oncology Division
Alphabetical list (active faculty):   
Leonel F. Hernandez-Aya

Leonel F. Hernandez-Aya, MD

Assistant Professor

Department of Medicine

Oncology Division

Medical Oncology

Clinical Interests

  • Breast cancer
  • Melanoma
  • Cancer immunotherapy

Research Interests

  • Cancer Immunotherapy
  • Cancer microenvironment
  • Breast cancer research
  • Melanoma clinical research


  • 314-747-5165 (office)
  • 314-362-7086 (fax)
  • Division of Oncology
    Campus Box 8056
    Washington University
    660 South Euclid Avenue
    St. Louis, MO 63110
  • 11th Floor Mid-Campus Center (office)


2001-2007 MD, School of Medicine, Universidad Nacional de Colombia, Bogota, Colombia
Post-graduate Training
2009-2012 Internal Medicine Internship and Residency, University of Miami Miller School of Medicine, Miami, FL
2012-2015 Hematology/Oncology Fellowship, University of Michigan Health System, Comprehensive Cancer Center, Ann Arbor, MI
Academic Positions
2015-present Assistant Professor, Department of Medicine, Division of Oncology, Washington University School of Medicine, St. Louis, MO
Board Certification
2012 American Board of Internal Medicine - Internal Medicine
2015 American Board of Internal Medicine - Medical Oncology
University & Hospital Appointments & Committees
2016-present Co-Leader, Siteman Cancer Center Melanoma & Cutaneous Oncology Program
Honors & Awards
2013 Workshop Grant Recipient, 22nd Annual AACR Workshop: Molecular Biology in Clinical Oncology, Snowmass Village, CO
2013 Travel Grant to attend the National Comprehensive Cancer Network (NCCN) 18th Annual Conference, Hollywood, FL
2014 15th Annual Fellows Travel Award Recipient, 24th Annual Mayo Clinic Hematology/Oncology Reviews, The Ritz-Carlton, Amelia Island, FL
Professional Societies
2009-2012 American College of Physicians
2012-present American Society of Clinical Oncology
2013-present American Association for Cancer Research
2019-present Society for Immunotherapy of Cancer