John L. Marshall

Hematologist & Oncologist

Mr. John L. Marshall is a Hematologist & Oncologist in Washington, DC with special training and skill in the diagnosis, treatment and/or prevention of blood diseases and cancers. As a Hematologist & Oncologist, John L. Marshall performs diagnosis and treatment of blood cancers, such as Hodgkins and non-Hodgkins lymphomas, leukemias and multiple myelomas, and also manages treatment of solid tumors. Hematology & Oncology is the diagnosis, treatment and prevention, as well as research into blood diseases and cancer. Significant diseases and conditions treated by Hematologists & Oncologists include iron-deficiency anemia, hemophilia, sickle-cell disease, leukemia and lymphoma. Medical tests, procedures and therapies provided by Hematologists & Oncologists include hemoglobin electrophoresis blood testing, human leukocyte antigen (HLA) testing, positron emission tomography (PET), bone marrow aspiration, lumbar puncture (spinal tap), or stem cell and bone marrow transplants.

An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.