Currently Sells is a partner at EKS&H LLLP, a large Colorado-based accounting and advisory firm. In this role he serves a variety of health care and non-profit clients including health systems, hospitals, physician groups, long-term care facilities, foundations, health and human services organizations and cultural art institutions. Prior to this position, Sells was an accountant with Holm Ryan Roberg Truitt PC as well as University Physicians, Inc.