A physician assistant (PA) is a medical professional who assists doctors in diagnosing, treating, and prescribing medication for patients. To become a PA requires graduating from an accredited PA program, which usually takes 6-7 years and includes science and anatomy courses. Students must also pass the Physician Assistant National Certifying Examination and obtain a state license. As a PA, common responsibilities include performing physical exams, ordering and reviewing lab tests, diagnosing and treating patients, prescribing medication, assisting in surgery, and counseling patients. A typical day involves seeing patients, documenting care, and collaborating with supervising physicians.