National Bill Audit Services, LLC

Expion Health is a leading provider of intelligent, tech-empowered prescription cost management solutions, based in North Bethesda, Maryland. We’re dedicated to transforming the pharmacy landscape by offering unbundled, modular strategies that deliver real results for our clients. Expion Health leverages an award-winning platform, ExpionIQ®, to provide dynamic analytics, real-time insights, and AI-driven optimization, helping organizations—from PBMs to self-funded employer groups—unlock significant savings and modernize their approach to prescription spend.

Our core mission is to move beyond traditional, opaque PBM models and create a more transparent and efficient system for managing pharmacy costs. We achieve this through our innovative ExpionIQ® platform, which combines predictive intelligence with actionable insights.

Founded in 2000, Expion Health has grown to serve over 80 national and regional payor clients, with an average client tenure exceeding 5 years and a 98% customer satisfaction rating. We’re committed to driving sustainable healthcare savings and shaping a smarter future for pharmacy. We manage over $8.1B in spend annually, and our leadership team, including CEO Karin Humphrey and President Chris Westbrook, brings decades of experience and a passion for innovation.