WebPT has acquired a Chicago-based software company to offer its own billing solution to its more than 50,000 members. Therabill, based outside of Chicago, makes web-based practice management software for physical and occupational therapists, speech-language pathologists and behavioral health specialists. Financial terms for the deal were not disclosed. It was announced Tuesday but closed at the end of July. WebPT, the Phoenix-based electronic medical record solution for physical therapists, has...