Nonprofit hospitals created largely to serve the poor are adding concierge physician practices, charging patients annual membership fees of $2,000 or more for easier access to their doctors. It’s a trend that began decades ago with physician practices. Thousands of doctors have shifted to the concierge model, in which they can increase their income while decreasing their patient load. Northwestern Medicine in Chicago, Penn Medicine in Philadelphia, University Hospitals in the Cleveland area, and Baptist Health in Miami are among the large hospital systems offering concierge physician services….