Charles Oppenheim chairs HLB's Business Department. He has been practicing health law for more than 25 years. His practice includes all aspects of transactional, operational and regulatory health law, including acquisitions, joint ventures, and integrated delivery systems. His clients include many of the largest health care organizations in the United States. He is a nationally-recognized expert on anti-kickback and Stark Law issues and has recognized expertise in health care gainsharing and pay-for-performance. He wrote the 2019 American Health Lawyers Association Monograph on Stark Law, the sixth edition of a treatise he first wrote in 1998.