We tracked doctors who had previously participated in a randomized policy experiment in the Philippines. The experiment involved 30 district hospitals divided equally into one control site and two interventions sites that increased insurance payments (full insurance support for children under 5 year old) or made bonus payments to hospital staff. During the three years of the intervention, quality- as measured by clinical performance and value (CPV) vignettes – improved and was sustained in both intervention sites compared to controls. Five years after the interventions were discontinued, we re-measured the quality of care of the doctors. We found that the intervention sites continued to have significantly higher quality compared to the control sites. The previously documented quality improvement in intervention sites appears to be sustained; moreover it was subject to a very low (less than 1 percent per year) rate of decay in quality scores.