A federal law enforcement action involving fraudulent genetic cancer testing has resulted in charges in five federal districts against 35 defendants associated with dozens of telemedicine companies and cancer genetic testing laboratories (CGx) for their alleged participation in one of the largest health care fraud schemes ever charged. According to the charges, these defendants fraudulently billed Medicare more than $2.1 billion for these CGx tests. Among those charged today are 10 medical professionals, including nine doctors.