Internistas are medical doctors who specialize in internal medicine, focusing on the diagnosis, treatment, and prevention of adult diseases. They are trained to manage complex medical conditions and often serve as primary care physicians, providing comprehensive care for patients with multiple health issues. These specialists are skilled in various areas, including cardiology, endocrinology, and gastroenterology. They conduct thorough examinations, order diagnostic tests, and develop treatment plans tailored to individual patients. Internistas play a crucial role in coordinating care and ensuring that patients receive appropriate referrals to other specialists when necessary.