Patient-centered medical homes (PCMHs) have the potential to improve patient experience of care. Since 2006, Geisinger Health System has implemented its own version of an advanced PCMH model, referred to as ProvenHealth Navigator (PHN). To evaluate the impact of PHN on patient experience of care, the authors conducted a survey of patients whose primary care clinics had been transformed to "PHN sites" and were under case management at the time of the survey. A comparable survey of patients from non-PHN sites also was conducted for comparison. The results suggest that patients in PHN sites were significantly more likely to report positive changes in their care experience and quality; moreover, they were more likely to cite the physician's office as their usual source of care rather than the emergency room (83% vs. 68% for physician's office; 11% vs. 23% for emergency room). However, the results also suggest that there was no significant difference between PHN and non-PHN patients in their perceptions of access to care or primary care physician performance in terms of patient-centered care (eg, listening, explaining, involving patients in decision making). These findings are consistent with the expectation that transformation of primary care into PCMH can lead to improved patient experience of care.