The Providers Clinical Support System (PCSS) will enhance the nation's capacity to repsond to the ongonig opiod epidemic through innovative training, menroring and implementation support to physicians and allied health professionals with the overarching goal to increase the availability of FDA approved medications for opioid use disorder (OUD). Continuing from and enhancing workfrom the current and previous funding cycles, specific goals of the PCSS are: (1) toincrease the number of providers of eveidence-basedopioid treatment (and specifically buprenorphine waivered prescribers and delivery teams), (2) enhance competencies of allied health professionals, (3) build healthcare organozation capacity to deliver OUD treatment and (4)im[rove providers ability to identify and impact structural barriers to successful OUD treatment. PCSS will continue to be led by the American Academy of Addiction Psychiatry (AAAP) and a committed consortium of partners representinginterdisciplinary jealth professional in addictionpsychiatry/medicine, primary care, implemantation science, behavioral health, prevention and recovery, including all five DATA 2000 organizations. The consortium is enhanced in this application to include an expanded role of the Addiction Technology Transfer Center (ATTC), experts in trainin addiction behavioral health specialists and the Council on Social Work Education (CSWE), American Psychiatric Nurses Association (APNA) Physicians Assistant Education Association (PAEA) and the National Judicial College (NJC), reflecting broaderreach to new precriber and behavioral health provider gropus and the justice system. In earlier funding cycles, PCSS developed a robust program of readily accessible web-based training toolsfor OUD treatment(e.g., webinars, list-serves, discussion boards, mentorin services)as well as in-person training curriculum for buprenorphine waiver training, to thousands of physicians, other prescribers and allied health professionals. In the most recent cycle, PCSS alsodeveloped and piloted a manualized implementation facilitation program for primary careprograms to integrated OUD treatment. PCSS consortium now proposes to continue and expandthese services to meet the following objectives: a) provide buprenorphine waiver training to over 11,ooo physicians, nurse practitioners, physicians assistants and medical students; b) expand existing resources to include the addition of the PCSS Exchange, a flexible, continuous series of training and technical assistance for prescribers and allied health professionals; c) expand PCSS implemantation into emergency departments and develop a curriculum to train implementation specialists; and d) enhance training content on poly-substance use, co-occurringmental health disorders, culturally intelligent practice and addressing social and economic barriers to successful OUD treatment. The opioid epidemic has compelled the healthcare system to re-evaluate methods for treating substance use disorders by offering a ""no wrong door"" approach; PCSS is committed to training the addiction workforce in diverse settings to provide patient-centered, appropriate, evidence-based care to help turn the tide of the opioid epidemic.