if to omnicare : omnicare 1600 rivercenter ii 100 rivercenter boulevard covington, ky 41011 attention : law department if to ghc : genesis healthcare corporation 101 east state street kennett square, pa 19348 attention : chief executive officer attention : law department oxygen concentrator $ 28. 00 ( per month ) plexus low air loss mattress $ 9. 50 / day