1. General Medicine
General medicine focuses on the overall health and well-being of adult patients. General practitioners (GPs) or family physicians are typically the first point of contact for patients. They diagnose and treat a wide range of illnesses and provide preventive care and health education.

2. Internal Medicine
Internal medicine physicians, also known as internists, specialize in the prevention, diagnosis, and treatment of adult diseases. They often manage complex medical conditions and coordinate care for patients with multiple health issues.

3. Emergency Medicine
Emergency medicine physicians work in the emergency department, where they treat acute illnesses and injuries requiring immediate medical attention. They are trained to make rapid decisions and stabilize patients in critical conditions.

4. Geriatrics
Geriatricians specialize in the healthcare of elderly individuals. They address the unique medical needs of older adults, including managing chronic conditions, promoting healthy aging, and addressing age-related health concerns.

5. Medical Research
Medical researchers conduct studies to improve our understanding of diseases, develop new treatments, and enhance healthcare practices. Their work contributes to medical advancements and the development of innovative therapies.

6. Public Health
Professionals in public health work to improve the overall health of communities and populations. They focus on disease prevention, health education, policy development, and healthcare system improvement to promote better health outcomes for society.