At the moment, healthcare services, such as dental clinics, have the same opportunities as other industries of utilizing ERP systems to escalate their activities. Unfortunately, ERP systems still have to go through problems associated with clinical personnel, who interact with the system using its UI, before it can be fully utilized. To solve this problem, a user interface redesign was needed so that ERP could fully satisfy the needs of clinical personnel. Therefore, design thinking was chosen and used as the design approach with its user-oriented nature that has been proven with various forms of successful interventions within healthcare services. The prototype of the redesigned user interface was made to visually deliver most of the previously unmet needs from personnel. Furthermore, by incorporating UT and PSSUQ survey as measurement instruments into the design thinking, researchers were able to justify the prototype for its improvement in usability after scoring lower time on tasks while preventing some errors, also for increased satisfaction perceived by users compared to the current UI.