Implicit bias, rooted in unconscious attitudes, fuels discrimination based on race, gender, or sexual orientation, disproportionately impacting marginalized groups. Despite the development of interventions addressing provider awareness of implicit bias, the advancement of clinical education through technology has been slow. In the UnBIASED research project, we investigated the usability of ConverSense, a personalized communication assessment tool to raise healthcare providers' awareness of bias in their communication with patients. This web-based tool measures social dimensions such as warmth, interactivity, engagement, and assertiveness from recorded patient-provider visits, and visualizes these patterns through graphs and embedded clips. In this study, we (PT, NE) examined whether ConverSense meets usability standards through heuristic evaluations conducted by design experts. Six healthcare technology experts participated in the evaluation of ConverSense using Nielsen's 10 usability heuristics. Experts documented usability issues for each heuristic and rated their severity on a scale from 0 (not a problem) to 4 (catastrophic problem). Through our analysis, we (PT, NE) identified three cross-cutting themes: 1) Poor design, where experts noted the absence of undo or delete buttons, making navigation challenging, and the distracting color scheme on graphs; 2) Data visualization issues, with experts expressing difficulty interpreting charts and uncertainty about what is considered ideal or good communication. One expert said “It's unclear what is considered ideal/good…for each gauge chart, high interactivity, engagement, and warmth I would assume are ideal/good. But how the charts are displayed in the system I cannot know for certain”; 3) Ambiguity in information presentation, where experts sought more definitions for measured social dimensions and recommended training links to help them identify personal actions they can take to improve their communication. This study underscores the value of incorporating expert feedback and addressing usability issues to improve tools like ConverSense to address implicit bias and promote equitable patient-provider interactions.