Baylor settles out of court with no admission of wrongdoing in a civil (not criminal) case and the ACGME puts them on probation and threatens loss of accreditation? I am skeptical.
I would agree about billing for physician professional services under Medicare if no attending MD were in the building, although even interpretations about this have been challenged in a few civil cases that have been tossed out by federal judges. Billing private insurance would theoretically not be a problem. The technical services and the facility fee billing in a hospital or on an inpatient will be different, though. But at the end of the day, the vagaries and complexities of billing and supervision levels should not be an existential worry of a radiation oncology resident (unless you hope to make a few extra bucks via a lucrative qui tam). If you don't have scienter, don't go looking for it.