Now that the merger between Legacy Health and PacificSource has been consummated, the squeeze is already being felt by Portland Adventist Medical Center and Tuality Health– neither of whom were part of the deal and both of whom have strong alliances with Oregon Health & Science University, which – together with its insurance partners, Oregon Health CO-OP and Moda Health, could go head to head in competing for self-insured employers by virtue of having an integrated healthcare system. .