Medical oncologists are medical specialists who diagnose, assess, treat, and manage patients with malignant tumors and conduct translational research. They treat cancer using chemotherapy and other medications including hormone therapy, targeted therapy, or immunotherapy. A medical oncologist is the primary health care provider for a cancer patient who leads the development process of the cancer treatment. They work along with other medical departments for attaining better results. Generally, your oncologist will oversee patient general care and coordinate treatments with other specialists. They are also responsible who continues with the pre-treatment, checkups of the patient, follow-ups, and post-treatment. They also help you manage cancer symptoms and treatment side effects.