Portrait of Chloe Atreya
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Chloe Atreya, MD, PhD

Medical Oncology (Gastrointestinal Cancer)
Gastrointestinal Medical Oncology Mission Bay
415-353-9888
Portrait of Chloe Atreya
Portrait of Chloe Atreya
ucsf logo

Chloe Atreya, MD, PhD

Medical Oncology (Gastrointestinal Cancer)
Gastrointestinal Medical Oncology Mission Bay
415-353-9888

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About me

Dr. Chloe Atreya is a medical oncologist who cares for patients with gastrointestinal cancer and co-director of the UCSF Young-Onset Colorectal Cancer Program. She is dedicated to practicing personalized medicine, integrating factors such as biomarkers to tailor treatment to each individual. She is passionate about treating each patient as a whole person and working toward health equity.

In her research, Atreya focuses on how tumor biology, lifestyle factors and the gut microbiome affect outcomes for patients with colorectal cancer. Her work has received grants from the National Institutes of Health, the American Cancer Society and other foundations. She also co-directs research hubs for integrative oncology and cancer microbiome research at the UCSF Helen Diller Family Comprehensive Cancer Center.

Atreya earned her medical degree and a doctorate in pharmacology at Yale University. She completed her internship and residency in internal medicine at the University of Washington, followed by fellowships in medical oncology and integrative medicine at UCSF.

In addition to caring for patients, Atreya is an affiliated faculty member at the UCSF Osher Center for Integrative Health and an active member of the Society for Integrative Oncology and American Society of Clinical Oncology.

Education & training

Board certification

  • Medical Oncology, American Board of Internal Med/Medical Oncology

Fellowship

  • Integrative Medicine, UCSF School of Medicine -GME
  • Oncology, University of CA at San Francisco - Hema/Onc GME

Residency

  • Internal Medicine, University of Washington School of Medicine

Internship

  • Internal Medicine, University of Washington School of Medicine

Degree

  • MD, Yale University School of Medicine

Academic title

  • Professor-in-Residence

Locations

    My goals are to improve outcomes and promote quality of life by personalizing care.

    My work

    Targeting liver cancer with a small pump

    Dr. Atreya was on the care team for one patient who beat cancer with a hepatic arterial infusion (HAI) pump, a device that delivers chemotherapy directly to the liver.

    Reviews

    Average rating

    4.9
    4.9 out of 5 Stars
    59 ratings
    About provider reviews

    Showing 1-6 of 18 reviews

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    • 5 out of 5 Stars
      July 23, 2026

      All questions were answered and are very professional

    • 5 out of 5 Stars
      July 9, 2026

      So far, my experience with the professional processes, thanks to all of you who have understood me, has been excellent. You have explained in detail what will happen, and this is very important to me because I need to understand what I am feeling, both psychologically and physically, during the chemotherapy and radiation treatments. At this point, everything has been very easy, as long as I follow the instructions to the letter. I know that later on, when I am undergoing treatment, it will be a little difficult, but I have to do it to remove the cancer from the affected area. Thank you all.

    • 5 out of 5 Stars
      July 9, 2026

      She has a hard job and she is very warm and compassionate in spite of how busy she may be.

    • 5 out of 5 Stars
      May 22, 2026

      Dr. Atreya made time to carefully listen to me. She quickly organized scheduling my treatment appointments.

    • 5 out of 5 Stars
      February 17, 2026

      I loved my tele health with Dr. Atreya & feel very confident in her treatment plan for me

    • 5 out of 5 Stars
      February 10, 2026

      Dr Atreya is a gem.

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