Erin Gillespie, MD

About Me

I am a radiation oncologist who specializes in treating breast cancer, lung cancer, and gastrointestinal cancers. strive to provide compassionate, patient-centered care. This means I actively involve my patients in decision-making to ensure the treatment plan reflects their preferences and goals. I also place a high priority on communication and coordination with the other care team members so that we are aligned in our shared aim of helping our patients get well.

Like so many people, I have a personal connection to cancer. My mom was first diagnosed with breast cancer when I was in high school in Anchorage. Soon thereafter I enrolled in college at Yale and was motivated to start working in a lab studying novel targets for drugs to treat breast cancer. I quickly realized that a career in medicine would allow me to apply my fascination with science to positively impact others through patient care, education, and research. I subsequently went to the University of Michigan Medical School, where I completed a research fellowship through the Howard Hughes Medical Institute that focused on bringing research findings from the lab to the bedside.

My research has since evolved to focus on creating strategies to reduce the differences in care that people receive in different hospitals and geographic regions, and to improve outcomes for all people with cancer. Despite living in Anchorage at the time of my mom’s diagnosis, she received care in the lower 48 states. This added complexity to her treatment course. With research grant funding from multiple agencies including the Agency for Healthcare Research and Quality, I have developed a decision-making support tool for radiation oncologists that is in use by radiation oncology professionals in all 50 states and over 80 countries.

I am also interested in using information technology to improve the patient’s experience of cancer care. At MSK we are developing web-based tools to collect information from patients about symptoms during treatment and aim to provide them with education and personalized feedback throughout their treatment.

  • Clinical Expertise: Breast Cancer; Gastrointestinal Cancers; Lung Cancer; Intensity-Modulated Radiation Therapy (IMRT); Image-Guided Radiation Therapy (IGRT); Stereotactic Body Radiation Therapy (SBRT)
  • Awards and Honors: Roentgen Resident Research Award (2017); ASCO Young Investigator Award (2017); RSNA Resident Research Grant (2016); RSNA Education Scholar Grant Recipient (2017); Alpha Omega Alpha (2012); Howard Hughes Medical Institute Medical Student Research Fellow (2010-2011); University of Michigan Medical School Dean’s Merit Scholar (2008-2012); Gerald R. Ford Scholar-Athlete Award (2007)
  • Languages Spoken: English
  • Education: MD, University of Michigan
  • Residencies: Preliminary Medicine - University of Washington; Radiation Oncology - University of California San Diego


Visit PubMed for a full listing of Erin Gillespie’s journal articles

Pubmed is an online index of biomedical articles maintained by the U.S. National Library of Medicine and the National Institutes of Health.

Clinical Trials

As home to one of the world’s top cancer research centers, Memorial Sloan Kettering is typically involved in more than 900 clinical trials at a given time. Currently, clinical trials focused on the conditions I treat are enrolling new patients. If you’re interested in joining a clinical trial, click to learn about the trial’s purpose, eligibility criteria, and how to get more information.

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Most major health insurers offer plans that include MSK as one of their in-network providers. If MSK is in-network, it means all our doctors are too. Medicaid and New York State Medicare also provide benefits for care at MSK.

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