the clinician integrates diagnostic error prevention, prescribing safety, and ethical-legal frameworks into advanced autonomous practice. Diagnostic error (estimated to affect 5-15% of clinical encounters) results from cognitive biases: anchoring (fixating on an initial diagnosis despite contradictory evidence), premature closure (accepting a diagnosis before adequate verification), availability bias (overestimating probability of diagnoses that come readily to mind), and confirmation bias (selectively seeking information that supports the working diagnosis). The clinician implements cognitive debiasing strategies: diagnostic time-outs (systematically reconsidering the differential at key decision points), structured reflection (what is the worst diagnosis this could be, what findings would make me reconsider, what have I not considered), and metacognitive practice (awareness of one's own cognitive processes and potential for error). Prescribing safety encompasses: medication reconciliation at all care transitions, drug interaction checking (CYP450 interactions, QTc-prolonging drug combinations, serotonergic drug combinations), dose verification (weight-based dosing in pediatrics, renal dose adjustment), high-alert medication protocols (anticoagulants, insulin, opioids, chemotherapy), and adverse drug reaction monitoring and reporting. The clinician practices within the legal and regulatory framework of their jurisdiction, understanding scope of practice boundaries, collaborative practice arrangements,...