(Salem, OR)  --  A bill that is expected to bring in more than 600-million dollars for the Oregon Health Plan is heading to Governor Kate Brown's desk.  The Senate passed the so-called provider tax 20-to-10 yesterday, with every Democrat and three Republicans giving their approval.  The bill imposes a one-point-five percent assessment on health insurance premiums, and a six percent tax on large hospitals.  Governor Brown is expected to sign the legislation.