NEW YORK (Standard&Poor's) Aug. 2, 2013--Standard&Poor's Ratings Services said it raised to 'AA-' from 'A' its rating on the District of Columbia's series 2009 revenue bonds issued for Sibley Memorial Hospital. At the same time, we assigned a 'AA-' long-term rating and stable outlook to Maryland Health&Higher Educational Facilities Authority's $243.1 million series 2013C revenue bonds, issued for Johns Hopkins Health System Obligated Group (JHHS). We also affirmed our 'AA-' long-term ratings on the authority's other debt issued for JHHS, and the 'AA-' rating on the authority's $24.5 million revenue bonds series 2005A, issued for JHMI Utilities LLC, which is guaranteed by JHHS. The outlook on all ratings is stable. "The upgrade is due
