I don't know about the community based psychiatrists in Canada, but here in the US we have community based therapists/ counselors who provide in home therapy, though it is usually for children and families. For adults you will have community based counselors who work in "step down programs". They are out of the psych hospital and in a group home environment. The counselors will work directly with them and are often alone and in situations that really surprised me with no supervision. It is a good service but at the same time it definitely can be very risky.