Cornerstone Adminisystems has been maximizing cash flow for EMS and ambulance organizations since 1994. It is not part of what we do, it is all we do. While other companies choose to segment into multiple realms of billing, Cornerstone stays committed to its core business: ambulance billing. Our focus is simple: Guaranteed Results. At 99%, we have one of the highest client retention rates in the industry. Many of our clients have been with us since day one. Our reputation is built on uncompromising client care, an industry-exclusive guarantee, and a host of feature-driven benefits. We continually serve our clients with proven practices, such as clean compliant billing, ePCR interface solutions, and Full Cycle Revenue Recovery. While we ensure the highest legally permissible level of reimbursement, it is not at the expense of your patients. As an extension of your service to the community, Cornerstone maintains the same level of professionalism.