Division of Oncology

in the Department of Medicine

Welcome to the Division of Oncology, a center of excellence in patient care, medical education, and state-of-the-art research. Cancer is a major public health problem and it is also an exciting challenge for discovery and innovation. 

Message from the Chief

A welcome message from the the Division of Oncology's chief, Dr. George W. Sledge Jr.

Open Positions

The Division of Oncology is seeking qualified faculty for several open positions.  Successful applicants must hold an MD or MD/PhD degree and be board-certified or board-eligible in Medical Oncology, and have a history of significant peer-reviewed funding. 

Our Mission

  • To engage in research to create the future of cancer care
  • To provide the best in care for cancer patients
  • To train physicians for careers in academic medicine and research


  • Cancer Education Seminars - videos are now available on Oncology Online.
  • Upcoming seminars are listed on the Department of Medicine events calendar.

Our newest faculty members

Welcome Sigurdis Haraldsdottir

We welcome Dr. Sigurdis Haraldsdottir to the Division of Oncology. She is an Assistant Professor (MCL) with a focus in Gastrointestinal Cancer. Dr. Haraldsdottir received her medical degree from the University of Iceland, and pursued her training in Medical Oncology at Ohio State University. While undergoing her fellowship training, she simultaneously worked towards a PhD in her native Iceland. Her research to date has focused on the genetics of colorectal cancer, in particular Lynch Syndrome and Mismatch Repair defects. She has performed truly fascinating work in this area through her interactions with Iceland’s DeCode project, work that has already led to her discovery of novel founder mutations. She joins our growing GI cancer group in the clinic, where she will focus much of her effort on colorectal cancer.

  • Faculty Spotlight - Shivaani Kummar, MD, FACP

    What routes do new faculty take as they wend their way through post-doctoral training to prepare for where life leads them? In particular, what routes do new faculty members in the Department of Medicine follow? What causes them to choose the fork in the road that takes them to the Stanford campus?…

  • Faculty Spotlight - Suleiman Massarweh, MD

    “Stanford is such a special place. Because of the depth of science here, there are unique opportunities to capitalize on the translational potential on campus. A big part of my role will be to build multidisciplinary research teams centered around the patient care platform.“…

Upcoming events

Oncology News

Young Investigator of the Year
Congratulations to Associate Professor Heather Wakelee, recipient of the 2015 ECOG-ACRIN Young Investigator Award for extraordinary contributions to thoracic oncology.

Charlotte Jacobs, professor emerita, has just released her second book, Jonas Salk: A Life, a masterful biography of the polio researcher, published by Oxford University Press.