Purpose The Mental Health Professionals’ Network (MHPN) was established to enhance collaborative care among health professionals working in mental health care in Australia. The MHPN has two primary arms: face-to-face network meetings and online webinars. The purpose of this paper is to investigate practice changes in health professionals who participated in one of MHPN’s live webinars. Design/methodology/approach Practice change was assessed by online survey with attendees from three MHPN webinars held in 2016. The survey link was e-mailed to webinar attendees three months after each webinar. Findings In total, 585 health professionals participated in the surveys. Four out of five respondents had made at least one practice change, particularly increased confidence in providing mental health care and increased discussions about other disciplines. General practitioners and psychologists were more likely than others to have made practice changes. Nine out of ten respondents rated the webinars as “very good” or “excellent.” Research limitations/implications MHPN’s webinar program positively impacts health professionals’ practice and represents an easily accessible and effective professional development opportunity for Australia’s mental health workforce. Originality/value The MHPN webinar program is unique in Australia. The MHPN provides opportunities for interdisciplinary professional development in the primary mental health sector. The model is highly cost effective and transferable to other settings and countries.