Costco Pharmacy in Tustin, CA, is highly regarded for its exceptional service and professionalism, particularly highlighted by the pharmacy manager, Derek Duc Doan. Customers appreciate his expertise in administering flu vaccines and his ability to make young patients feel comfortable and at ease. Derek’s friendly demeanor ensures that every visit is pleasant, making customers feel valued and cared for. Overall, the pharmacy team is noted for their efficiency and attentiveness, with minimal wait times reported even during busy periods. Many customers enjoy the welcoming atmosphere created by the staff, who are described as friendly and helpful. The pharmacy is part of a larger Costco experience, which includes convenient shopping alongside other stores. Additionally, the pharmacy has garnered a loyal following, with families expressing gratitude for the familiar and friendly service they receive. Overall, Costco Pharmacy in Tustin stands out as a reliable and customer-centric establishment, offering a top-notch pharmacy experience that keeps customers returning time and again.