The former owner of several physical therapy clinics in Greater Boston has been indicted by a federal grand jury on healthcare fraud charges. Chang Goo Yoon, 59, a South Korean national residing in Queens, NY, was indicted on two counts of healthcare fraud and one count of aggravated identity theft. Yoon was arrested and charged by criminal complaint in February 2021. According to charging documents, Yoon was the owner and operator of several physical therapy clinics in Allston, Waltham and Brookline between 2014 and 2018. It is alleged that Yoon billed patients for non-existent physical therapy appointments, including approximately $200,000 in claims billed on dates when Yoon was traveling in South Korea, Los Angeles, and Toronto. Yoon also billed $60,000 in claims on dates when he was gambling at casinos including the Golden Nugget in Atlantic City, N.J., MGM Springfield in Massachusetts and Twin River Casino in Lincoln, R.I. Additionally, Yoon submitted approximately $30,000 in physical therapy claims for himself after three automobile accidents. According to the indictment, most of those claims falsely listed one of Yoon’s employees as the servicing physical therapist. The remaining claims allegedly listed Yoon as both the patient and the servicing physical therapist.