American Society of Ketamine Physicians, Psychotherapists & Practitioners — this one just added the Psychotherapists and Practitioners part recently, and is highly biased towards MD level clinicians only. Worth $300 per year membership? (Not for me in the year I was.)
American Psychedelic Practitioner Association — this one is new, like much of the psychedelic ecosystem. They do have the support of CIIS and Soundmind faculty and have just released clinical guidelines for psychedelic practice that emphasizes psychotherapy. They do have a member forum and are looking for folks to get involved in different workgroups. I joined, and am waiting to see how they evolve.
Psychedelic Medicine Association I joined, they do have a forum that no one uses, and haven’t seen much benefit or evolution so far.
American Association of Psychedelics — just found this one today, and have never heard of it. Looks expensive, and not sure what their certification means from them at this point in the ecosystem/infrastructure.