AHLA's most recent 50-state survey looks great: Health Care Fraud Law: A 50 State Survey. The research required for such a project is back-breaking. 

My first publication for AHLA (actually, it was for NHLA, one of the merger partners that produced the AHLA) was “State Illegal Remuneration and Self-Referral Laws” (1996). Searching out every relevant state statute led to free-standing prohibitions, prohibitions inside professional licensing laws, and -- in one memorable instance -- a prohibition against paying for referrals that was buried in the Massachusetts motor vehicle insurance statute. 

It looks like AHLA rounded up health lawyers from each jurisdiction to research their own state's laws. Smart. Very smart.

Members and non-members alike can order a copy here.