HEALTH: Coastal Health Alliance C.E.O. Steven Siegel spoke to staff at a taco party held on Wednesday afternoon in celebration of National Health Center Week. Mr. Siegel gave an update on some of the improvements the nonprofit is making to its facilities and recounted a conversation he had with Senator Bernie Sanders earlier in the week, in which Sen. Sanders said the C.H.A. “was one of the solutions to a dysfunctional health care system.”   David Briggs