Physician Assistants are medical providers, most with graduate-level educations. They are licensed to diagnose and treat illness and disease, and to prescribe medication for patients.
PAs work in physician offices, hospitals, and clinics in collaboration with a licensed physician. Because of their advanced education in general medicine, modeled after physician education, PAs can treat patients with significant autonomy within the physician/PA relationship.
In the primary care setting, PAs can provide almost all the clinical services that physicians provide, including performing physical exams, diagnosing and treating illnesses and prescribing medications.