John L. Marshall, MD 3800 Reservoir Road Northwest, Washington, District of Columbia 20007

"Dr. Marshall has been my oncologist for three years. I appreciate that he provides me with all the options while also giving his advice. He's patient with questions. Perhaps most importantly, he cares Feely about my well being. That shows in his dedication and care."

"I have no enough words to express my appreciation to Dr. Marshall and his oncology team for all the work they are doing to cure my condition. They literally dragged me back to normal happy live. Thank to Dr. Marshall and his team I feel much much better now. And I know my life in good hands! Thank to meticulously created by Dr. Marshall treatment plan my health is improving and I have hope and I may see bright horizons ahead of me! Thank you Dr. Marshall and GU Hematology and Oncology team!!!"

"I have a rare form of cancer that I have been under the expert & compassionate care of Dr. Marshall for 10 years. His knowledge & ever positive attitude & commitment in finding the best care for me has kept me living my best life through some pretty tough times."

"Dr. Marshall is a legend and a phenomenal doctor. He's made my cancer treatment as good as it could possibly be. I trust him completely and feel secure in the care he provides."