In case you hadn’t heard, the Welsh, Carson, Anderson & Stowe private equity firm was featured in several deal announcements last week. The largest deal, at $1.06 billion, was for Concentra Inc., a subsidiary of Humana Inc. (NYSE: HUM), which operates urgent care, occupational medicine, physical therapy and other programs. For the transaction, Welsh, Carson formed a joint venture with Select Medical Corporation (NYSE: SEM), which operates specialty hospitals and outpatient rehab clinics. Then there was the sale of a majority stake in its portfolio company, United Surgical Partners Inc. Tenet Healthcare Corporation (NYSE: THC) paid $425 million for a 50.1% interest, and will acquire the rest over the next five years through a put/call structure. At the same time, the PE firm sold another portfolio company, UK-based Aspen Healthcare Ltd., to Tenet for another $215 million. Whew.