The short answer is no, seeing a hematologist-oncologist does not necessarily mean you have cancer. Although Heme/Onc physicians primarily treat cancer, they also provide a variety of other types of medical care. Hematologist-oncologists may provide cancer screening tests to patients that have cancer in remission or that have finished treatment. They may also provide specialized care for individuals with high-risk cancer syndromes such as Von Hippel-Lindau or Lynch syndrome. They provide treatment and transfusions for blood disorders and oversee patient wellbeing during radiation treatment and after surgery. Lastly, they work hand in hand with other medical specialties to provide cancer and non-cancer-related patient care.