Dennis Diaz is a health care regulatory and transactional lawyer. For over 25 years, he has represented a wide range of health care providers, including multi-hospital systems, community hospitals, physician-hospital organizations, ambulatory surgery centers, and medical groups, in California and nationally. Dennis focuses his practice on regulatory and compliance matters, fraud and abuse, provider transactions including hospital-physician alignment and joint ventures, provider operations, and billing and payment issues. He regularly advises and defends providers against government enforcement actions and in investigations involving health care regulatory issues, and has served as lead counsel in structuring hospital-physician integrated delivery organizations, including accountable care organizations and medical foundations, and ambulatory surgery centers. Dennis also acts as outside general counsel to hospitals and medical groups.