The American Society of Clinical Oncology projects a shortage of more than 2,200 Hematologist Oncologists and medical Oncologists by 2025. Demand for cancer treatment is expected to grow 40% by 2025, according to a report from Doximity. The demand comes from the aging U.S. population, including many aging Hematologist Oncologists and medical Oncologists. The U.S. Census expects the number of people older than 65 to hit nearly 84 million by 2050. At the same time, more than half of these practicing specialists are at or beyond retirement age, says the Association of American Medical Colleges (AAMC).