Skip to Main Content


Jill Lacy, MD

Professor of Medicine (Medical Oncology)

Contact Information

Jill Lacy, MD

Patient Care Location

Mailing Address

  • Medical Oncology

    PO Box 208028

    New Haven, CT 06520-8028

    United States



Dr. Jill Lacy is Professor of Medicine in the Section of Medical Oncology at Yale School of Medicine with over 30 years of experience as a practicing Medical Oncologist. Dr. Lacy graduated from Yale School of Medicine in 1978, completed training in Internal Medicine and Medical Oncology at Yale, and is board-certified in Internal Medicine and Medical Oncology. Dr. Lacy's early career was focused on clinical and basic research related to Epstein Barr virus-mediated oncogenesis and HIV-associated malignancies during the height of the AIDS epidemic. In recent years, Dr. Lacy's clinical practice has been devoted to caring for patients with gastrointestinal malignancies. Her current research is focused on therapeutic clinical trials in GI malignancies, including gastroesophageal, pancreatic, and colorectal cancers. She is the principle investigator on a number of investigator-initiated, pharmaceutical, and cooperative group studies. She has served on national committees focused on optimizing the education of Medical Oncology trainees and recruiting minority students to careers in Oncology.

Education & Training

  • Fellow
    Yale University School of Medicine (1985)
  • Resident
    Yale University School of Medicine (1982)
  • MD
    Yale University (1978)

Honors & Recognition

AwardAwarding OrganizationDate
FellowAmerican Society of Clinical Oncology2021
America's Top Doctors (digital guide): 2016, 2017, 2018, 2019, 2020, 2021Castle Connolly2021
Exceptional Women In MedicineCastle Connolly2019
Top Doctors for Cancer, Newsweek Magazine July 20152015
Castle Connolly America's Top Doctors for Cancer (digital guide): 2016, 2017, 2018, 2019, 2020, 20212015
Member, ASCO Oncology Training Programs Committee, 2007-2010American Society of Clinical Oncology
Member, ASCO Diversity in Oncology Initiative Advisory and Review Comm, 2008-presentAmerican Society of Clinical Oncology
Chairwoman, ASCO Diversity in Oncology Initiative Advisory and Review Comm, 2011, 2012American Society of Clinical Oncology
New York Magazine Top Doctor (Medical Oncology), 2006-2008

Departments & Organizations