Blackstone Inc. (NYSE:BX) has joined the race to buy Omega Healthcare (OMH HealthEdge Holdings, LLC), at an estimated valuation of $1.7 billion. Omega Healthcare, which has 27,000 employees on its roll, is majority-owned by Goldman Sachs Asset Management (Goldman Sachs Asset Management, L.P.) and Everstone Capital (Everstone Capital Asia Pte Ltd), which are looking for an exit, said a source close to the development. Blackstone, Goldman Sachs, Everstone, and Omega Healthcare declined to comment on the impending sale.