Hospital tax: An article in Friday's California section about Gov. Arnold Schwarzenegger's proposal to tax hospitals said, incorrectly, that Kaiser Permanente would lose money under the plan because its hospitals do not treat uninsured patients or accept walk-ins. Kaiser's emergency rooms do both. Kaiser would lose money under the plan because it treats proportionately fewer Medi-Cal patients than other major California hospitals. So Kaiser would not benefit as others would from the increase in Medi-Cal rates that Schwarzenegger's plan assumes.