Chimerix appoints M. Michelle Berrey, M.D., M.P.H. as CEO Chimerix announced the appointment of M. Michelle Berrey, M.D., M.P.H. to the position of President and CEO. Dr. Berrey succeeds Kenneth I. Moch following his resignation from that role to pursue other interests. In addition, Dr. Berrey will continue to serve as Chimerix's Chief Medical Officer.