One of the portfolio companies of Los Angeles-based private equity investor Levine Leichtman Capital Partners has made a big acquisition, the company said this morning. According to Levine Leichtman, Monte Nido & Affiliates, its portfolio company, has acquired Walden Behavioral Care. Financial terms of the deal were not announced. Monte Nido & Affiliates is based in Miami, Florida; Walden Behavioral Care is based in Waltham, Massachusetts. Levine Leichtman says Monte Nido now operates 44 facilities across thirteen states. According to the companies, Monte Nido and LLCP were advised on the transaction by Honigman LLP and Polsinelli LLP. Covington Associates served as exclusive financial advisor to Walden.