Take a look at who is on the faculty of the Engaged Mindfulness Institute located in Massachusetts. This line of their 'about us' page caught my eye: The Institute specializes in training professionals and volunteers who support at-risk individuals and communities and underserved populations. . Many of the world-class esteemed teachers of meditation, mindfulness and contemplative research are on the faculty. Check it out here.
They have on-line and in-person training. Just an FYI.