Leadership Team Mary RobertsExecutive Director of Sierra Regency/COOBiography Brian VittitoeExecutive Director of Sycamore GlenBiography Arend D. VerweijExecutive Director of Oakwood VillageBiography Kristine ReymontExecutive Director of Gladding RidgeBiography Cathy DustinExecutive Director of Hampshire ManorBiography Mark NilssonExecutive Director of Sonoma HillsBiography Jackie HowardExecutive Director of Sterling CourtBiography