John L. Marshall, MD
Chief, Division of Hematology/Oncology, Medstar Georgetown University Hospital
Director, Otto J. Ruesch Center for the Cure of Gastrointestinal Cancer
John Marshall, MD, is a global leader and pioneer in the research and development of drugs for the cure of colon and other gastrointestinal (GI) cancers. He has been the principal investigator of over 150 clinical trials, at the local as well as national levels. Dr. Marshall is the clinical director of oncology for Georgetown University Hospital and chief of the Division of Hematology-Oncology. He is widely published in the field of clinical oncology, reviews manuscripts for eight journals, and has held peer-reviewed grants from the National Institutes of Health.
In 2009, Dr. Marshall became the founding director of the Otto J. Ruesch Center for the Cure of Gastrointestinal Cancer. Combining his expertise in molecular medicine, translational research, and a patient-centered philosophy, the Ruesch Center is dedicated to realizing the dream of individualized curative therapies through research, care and advocacy.
Dr. Marshall’s own research focuses on the development of a novel vaccine for the treatment of advanced colon cancer. For over a decade, he has directed Lombardi’s Developmental Therapeutics Program while also maintaining his regular clinical practice. Seeing about 60 patients per week, Dr. Marshall specializes in cancers of the GI tract at all stages of the disease.
Dr. Marshall’s passion for medicine began at an early age when, at 14, he lost his mother to non-hodgkins lymphoma and dedicated himself to becoming a doctor and helping find a cure for cancer. A graduate of Duke University and the University of Louisville School of Medicine, he completed his medical training at Georgetown University Hospital and has remained there for over 20 years.
Dr. Marshall's deep care for his patients and his warm humor help him to develop strong doctor-patient relationships. In 2006 he acquired the additional valuable perspective of being a caregiver for a cancer patient as his wife, Liza, was diagnosed with an aggressive form of breast cancer and underwent nine months of treatment. Dr. Marshall counts the relationships with his patients as one of the most gratifying parts of his job.
Dr. Marshall lives in Arlington, Virginia with his wife Liza and their two children, Charlie and Emma.