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References: Fraud Investigation and Compliance

  1. False Claims Act - Wikipedia - Explains the federal statute imposing civil and criminal liability for defrauding government programs, including the qui tam whistleblower provision this chapter identifies as a major driver of healthcare fraud prosecutions.

  2. Pill Mill - Wikipedia - Describes clinics that prescribe controlled substances without legitimate medical evaluation, the individual fraud pattern this chapter distinguishes from multi-provider collusion rings.

  3. Shell Corporation - Wikipedia - Covers entities with no genuine operations formed to obscure beneficial ownership, the structure this chapter's shell company detection targets when tracing fraud-ring proceeds.

  4. Principles of Fraud Examination (6th Edition) - Joseph T. Wells - Wiley - Written by the founder of the Association of Certified Fraud Examiners, credited for translating Cressey's fraud triangle into the standard case-creation and evidence-gathering methodology this chapter's fraud investigation workflow follows.

  5. Introduction to Social Network Methods - Robert A. Hanneman and Mark Riddle - University of California, Riverside - A freely available text credited for the clearest widely-adopted explanation of degree versus betweenness centrality for identifying key actors, directly matching this chapter's method for distinguishing a fraud ring's organizer from peripheral members.

  6. List of Excluded Individuals/Entities (LEIE) - HHS Office of Inspector General - The official searchable database of providers barred from federal healthcare programs that this chapter models as the EXCLUDED_ON edge every provider node must be checked against.

  7. Medicare Fee-for-Service Compliance Programs - Centers for Medicare & Medicaid Services - CMS's official description of Recovery Audit Contractors reviewing paid claims post-payment, the mechanism this chapter distinguishes from fraud investigation because RACs also catch honest coding errors.

  8. False Claims Act Settlements and Judgments Exceed $6.8B in Fiscal Year 2025 - U.S. Department of Justice - Reports record qui tam filings and whistleblower recovery shares, providing current evidence for this chapter's claim that whistleblower tips are among the most productive sources of fraud cases.

  9. How to Search for Exclusions on SAM.gov - U.S. Department of the Interior - A federal guide to searching the SAM.gov exclusion list, the second sanctioned-provider list this chapter's exclusion-screening table places alongside the LEIE.

  10. Betweenness Centrality - Neo4j Graph Data Science Documentation - Documents the algorithm that scores nodes by how often they bridge shortest paths, the specific measure this chapter uses to identify a collusion ring's organizer versus a peripheral participant.