Display information from multiple databases

I currently use multi-db and created 256 databases. It has worked perfectly for me. However, now I am trying to retrieve information from the various sites that I created and am having difficulty doing this. I do not want to access each site or their database to gather the information…I would like to pull the information together in one place to access it. Can this be done? If so, can you lead me in the right direction?

For example, I use a sms plugin. Can I gather phone numbers from within all the websites in one easy step…or create a process that allows me to access them in one easy step?