Ventas, Inc. is a healthcare real estate investment trust (REIT), engaged in acquisition, ownership and leasing of senior housing, life science, research & innovation (R&I) and healthcare properties. It has portfolios of more than 1,200 properties located in the U.S., Canada and the U.K., including senior housing communities, medical office buildings, life science, research & innovation centers, inpatient rehabilitation facilities, long-term acute-care facilities and health systems. It offers MOB management, leasing, marketing, facility development and advisory services to hospitals & health systems via its ownership interest in PMB Real Estate Services LLC and its subsidiary, Lillibridge Healthcare Services, Inc. It makes secured and non-mortgage loans and other investments relating to senior housing and healthcare properties/ operators. It has 3 units: triple-net leased properties, senior living operations and office operations.