Direct Secure Messaging provides point to point secure encrypted communications. Use of Direct Secure Messaging is considered by the Office of the National Coordinator to be the preferred method of sharing information during transitions of care and is therefore a measure in the Promoting Interoperability initiative. Orion Health, the health information service provider (HISP) for the SYNCRONYS DSM service is a member of Direct Trust. For a Direct Trust member list, visit this site.