The Centers for Medicare and Medicaid Services (CMS) have a multitude of resources to detect and protect against fraud and abuse in claims. Particularly, CMS has at least six types of contractors that provide different roles in the prevention, detection, and reporting of fraud and abuse in healthcare. This list includes Recovery Auditors, which serve to reduce fraud and abuse by detecting and collecting overpayments from entities and Comprehensive Error Rate Testing (CERT) Contractors, which determine rates of improper payments by reviewing claims under Medicare Fee-For-Service (FFS). Another auditor that providers should be particularly mindful of are the Zone Program Integrity Contractors (ZPICs). This article is an overview ZPICS, its role in Medicare, and outlines the steps providers should take when faced with an audit by ZPICs.