Despite guidelines for screening and treating perinatal mood and anxiety disorders (PMADs), systemic issues and clinician biases often result in unmet mental health needs in Black women. This study assessed the feasibility and impact of comprehensive PMAD training on obstetric healthcare providers’ attitudes, knowledge, and implicit racial biases. We conducted a feasibility study with two cohorts of healthcare providers who received either in-person or virtual training. The training focused on PMADs, implicit bias, and culturally responsive care. Participants completed pre- and post-training assessments measuring attitudes, knowledge, empathy, and implicit racial biases. Both training modalities showed trends towards improved PMAD screening attitudes and empathy, with significant increases in beliefs about treatment efficacy. Implicit bias scores approached significance, showing a shift toward fewer participants with racial preferences. However, there was an unexplained increase in preference for White over Black post training. The training improved healthcare providers’ readiness to screen for PMADs and enhanced their understanding of PMADs. However, the persistence of implicit biases highlights the need for ongoing, sustained interventions to address deeply rooted biases. Future research should incorporate continuous learning strategies and link training to healthcare outcomes for minoritized communities.