[영문]Patients increasingly want electronic access to providers, but physicians have been slow to offer e-access, fearing they will be overwhelmed by unreimbursed patient messages. This article reports on efforts to measure how patient-provider web messaging affects physician productivity. To measure productivity, researchers analyzed the work of a group of physicians using a secure Web messaging system, compared with a control group that did not use the system. Results showed that physicians using the electronic media to communicate had about a 10 percent increase in productivity. Secure Web messaging?s benefits also outweigh those of e-mail in increasing productivity and allaying concerns of physicians.