I work for a practice in which the husband is a cardiologist and the wife is internal medicine. Can we bill Medicare for a nuclear stress test (contains two injection codes A9502 and J2785) and a flu shot(90686 and G0008) in the same day? The two doctors share the same tax ID number but each have different NPI number. Will the claim be denied? Will the payment be reduced. We are already applying modifier 51 to 93015 for the stress test)