Dr. Wesley Kidder is a gastrointestinal oncologist with a special interest in colon and rectal cancers.

Kidder studies the role that the gut microbiome – the microorganisms that live in the digestive tract – plays in the development and treatment of colon and rectal cancers. His research includes examining the changes in the microbiome that occur following treatment with oral chemotherapy.

After earning a master of public health degree from the University of Southern California, Kidder earned his medical degree at the George Washington University School of Medicine and Health Sciences. He then completed a residency in internal medicine at the University of California, San Diego, where he served as chief resident. He completed a fellowship in hematology and medical oncology at UCSF, where he also served as the chief fellow for his final two years.

Kidder belongs to the American Society of Clinical Oncology and American Society of Hematology.

  • Education

    George Washington University School of Medicine and Health Sciences, 2011

    University of Southern California, MPH, 2005

  • Residencies

    UC San Diego, Internal Medicine, 2015

  • Fellowships

    UCSF, Hematology and Medical Oncology, 2018

  • Board Certifications

    Internal Medicine, American Board of Internal Medicine

    Medical Oncology, American Board of Internal Medicine

  • Academic Title

    Assistant Professor

Clinics I work with

Gastrointestinal Medical Oncology Clinic

Bakar Precision Cancer Medicine Building

1825 Fourth St., Fourth Floor
San Francisco, CA 94158

Center for Neuroendocrine Tumors

Bakar Precision Cancer Medicine Building

1825 Fourth St.
San Francisco, CA 94158

My reviews


Overall Experience
194 Reviews
Explained things in a way that was easy to understand
193 Reviews
Did the doctor pay attention to your concerns
192 Reviews
Gave easy to understand instructions about taking care of health problems or concerns
193 Reviews
Knew the important information about your medical history
194 Reviews
The provider showed respect for what you had to say
193 Reviews
The provider spent enough time with me
194 Reviews
Decorative Caduceus

Gut Microbiome in Colorectal Cancer

Feasibility and acceptability will be assessed by evaluating percentage of patients approached that consent to participate