It is critical for organizations to understand the OIG exclusion list, or they could face hefty fines or be restricted from filing claims with Medicare and Medicaid. The list includes all individuals and entities that are excluded from working or providing goods or services to any organization in the healthcare industry. A person or entity could be added to the list for reasons such as theft, fraud, loss of professional license, or obstructing an investigation and providers are also at risk for being added to the list for failing to comply with all requirements of the Social Security Act.