1. Bill Ryan, president and CEO of The Center for Health Affairs and its business affiliate CHAMPS Healthcare, will retire at the end of 2016.
2. Laval, Quebec, Canada-based Valeant Pharmaceuticals named Joseph Papa CEO after he resigned from Allegan, Mich.-based Perrigo
3. Portland-based CareOregon chose Eric C. Hunter as CEO, effective June 1.
4. Todd Mann was named CEO of McAllen (Texas) Medical Center.
5. Bill Masterton, CEO of Piedmont Medical Center in Rock Hill, S.C., resigned to take a new job at a teaching hospital in New Orleans.
