DeMarco and Associates and Pendulum HealthCare Corporation provide services to help organizations develop accountable care organizations (ACOs). They assist with infrastructure development, care coordination, and data analytics. Pendulum also designs, develops, and manages ACOs. An ACO aims to deliver coordinated, efficient care to a defined patient population through provider collaboration and accountability for costs and quality outcomes. Requirements include agreements between primary care physicians, specialists, and hospitals to be responsible for a minimum number of Medicare beneficiaries.