Rationale: Physicians may have concerns about medical-legal issues, scope of practice, continuity of care, workload, and satisfaction as other health disciplines integrate into primary care. This study involved a qualitative evaluation of physicians' perspectives as 7 pharmacists integrated into 7 physician-led family practices in the Ontario IMPACT (Integrating family Medicine and Pharmacy to Advance primary Care Therapeutics) project. Pharmacists provided medication assessments, drug information, and academic detailing, and developed office system enhancements to optimize drug therapy.