A free, nationwide service was launched today to help primary care providers seeking to identify and advise substance-abusing patients. The service, Physician Clinical Support System for Primary Care (PCSS-P), offers peer-to-peer mentorship and resources on incorporating screening and follow-up into regular patient care. PCSS-P is a project of the National Institute on Drug Abuse (NIDA), part of the National Institutes of Health, and the American Society of Addiction Medicine (ASAM).