A nurse practitioner (NP) is an advanced practice nurse (APN or APRN) who provides primary care and specialized services to patients across a variety of settings and specialties, including acute care as well as adult, pediatric, geriatric, and family medicine. NPs can provide diagnoses and...

Physician assistants (PA) in critical care are licensed practitioners who practice under physician supervision. To qualify for practice, candidates must first complete an educational program accredited by the Accreditation Review Commission on Education for the Physician Assistant (ARC-PA) or...

Physician assistants (PA) in endocrinology are licensed practitioners who practice under physician supervision. The privileges of any PA are decided in large part by the supervising physician.

Clinical investigators are trained physicians in all medical specialties who are also involved in the broad field of hypothesis-driven biomedical research and clinical trials, the findings and benefits of which are intended to help society at large, according to the American Society for Clinical...

Family physicians are trained to care for patients throughout their life span. As a result, they build relationships with them over time, unlike specialists who may see a patient once or twice for a specific ailment. When family physicians refer a patient to a surgeon, family physicians may...

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