Wil Kiesel is a seasoned leader in the workers’ compensation and insurance cost containment industry, bringing more than two decades of experience in strategic growth, client partnerships, and performance-driven solutions. Since beginning his career in 2004 at John Mullen & Company in Honolulu, Hawaii, Wil has built a reputation for driving meaningful results through innovation, service excellence, and trusted relationships.

As Vice President of Sales & Account Management at CostFirst, Wil leads national sales strategy, enterprise account growth, and client retention initiatives across carriers, third-party administrators, self-insured employers, and risk management organizations. His focus is centered on helping clients navigate the rapidly evolving claims landscape through smarter medical cost containment, analytics-driven decision making, and measurable outcomes.

Wil’s expertise spans the full spectrum of medical cost management solutions, including bill review optimization, lien resolution, nurse case management, settlement support, utilization management, provider oversight, and emerging analytics technologies. He is known for aligning CostFirst’s services with the industry’s current priorities: reducing claim spend, accelerating closure rates, improving operational efficiency, and strengthening claim outcomes.

Beyond his executive leadership role, Wil is the Co-Founder of Rainbow Risk Alliance, an organization focused on advancing inclusion, visibility, and meaningful connections within the risk management and insurance community. He also serves on the board of Los Angeles RIMS, where he supports professional development, industry collaboration, and community engagement across the Southern California market.

A consistent top performer throughout his career, Wil combines executive-level business development experience with a hands-on commitment to client success. His leadership style is rooted in responsiveness, accountability, and delivering value that clients can clearly see and measure.

With deep industry relationships, a passion for people, and a forward-thinking mindset, Wil continues to help position CostFirst as a trusted partner for organizations seeking next-generation solutions in workers’ compensation and general liability.

Contact: wkiesel@costfirst.com