Melissa Guilliams is the Senior Director of Member Success at AdvantageTrust. She earned her Bachelor of Science in Social Work from Southeast Missouri State University and is a 2024 graduate of the HCA Leadership Institute Academy. With 19 years of experience in medical disability claims management and more than a decade in Supply Chain and GPO operations, Melissa brings deep expertise in analytics, supplier relationship management, contract implementation and delivering measurable member value.

She has been a trusted MGMA BestPrice partner since the program’s launch in 2016 and has supported members at every MGMA Annual Conference since its inception.