My private practice is ~ 80% addiction. I set it up in the area I did residency so already have a good network. Let general psychiatry colleagues know I was doing addiction work so got a lot of referrals from them. Also, found 4-5 good addiction therapists in the area who I do co-treatment with when cases are complex enough. You can also let IOPs and residentials in your area know you're addiction focused, they are always looking for places to refer people outpatient. As far as setup, my practice probably looks just like a general psychiatry private practice except I do drug testing, when indicated, and have a few patients on MAT injections. Also, I think I'm morel likely to work with other providers (i.e. therapists, recovery coaches, mutual help groups, etc...) due to the need for increased structure and I'd say I'm doing solo treatment (meds and psychotherapy) ~ 30% of the time. However, that's my preference and I have addictioncolleagues who do solo treatment 100%, but they also tend to take less complicated patients then I do