Memorial Sloan Kettering radiation oncologist Erin Gillespie

Erin Gillespie, MD

Radiation Oncologist

Clinical Expertise

Breast Cancer; Gastrointestinal Cancers; Lung Cancer; Intensity-Modulated Radiation Therapy (IMRT); Image-Guided Radiation Therapy (IGRT); Stereotactic Body Radiation Therapy (SBRT)

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Accepted Insurance Providers

Dr. Gillespie accepts the following list of insurance providers. Select your insurance provider to see more details.

Contact and Location

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Find a Convenient Location

Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offers many services, including screening, chemotherapy, and medical testing.

About Me


MD, University of Michigan


Preliminary Medicine - University of Washington; Radiation Oncology - University of California San Diego

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.

I actively involve my patients in decision-making to ensure the treatment plan reflects their preferences and goals.

Dr. Gillespie

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)


Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.

Clinical Trials

Smiling doctors in the lab

Find a Clinical Trial for You

Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.

You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Gillespie’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.