An Adult-Gerontology Nurse Practitioner (AGNP) is an advanced practice registered nurse (APRN) who specializes in caring for adults, including older adults and the elderly. AGNPs diagnose illnesses, develop treatment plans, prescribe medications, and provide preventive care. They can work in various settings, such as hospitals, primary care clinics, long-term care facilities, and specialty practices. AGNPs may focus on either acute or primary care, depending on their certification and training. They play a critical role in managing chronic diseases, promoting wellness, and improving patient outcomes.