We served as lead counsel for Envision Healthcare Corporation and current and former board members in four derivative actions asserting claims for breach of fiduciary duty, wasted corporate assets, unjust enrichment and violations of the Securities and Exchange Act of 1934 arising out of allegations of over billing and improperly billing medical patients, failing to supervise corporate action and failure to maintain proper internal controls.  These cases were consolidated in 2018.  Following a company merger, the case was dismissed in its entirety on October 25, 2018. Purrone v. Sanger et al., Case No. 3:17-cv-01472 (M.D. Tenn.).