He isn't going to call them out by name
Perhaps not in a speech but perhaps in a new publicly available dataset that contains the taxes paid by public corporations. Then "we the people" can slice and dice that information anyway we see fit.
I believe it was last year that CMS made available, for the first time, a dataset that exposed the amount it paid to hospitals and doctors. And, for several years now, CMS has made available data sets showing the quality of service provided by hospitals, nursing homes, dialysis facilities, etc. Also, it is my understanding that this fall, HHS will release a dataset that exposes the quality of services provided by physician groups. At least one state, NY, has even sponsored a app development challenge that requires the use of quality and cost datasets developed by NY and/or the feds.
There are ways to expose these tax deadbeats without doing it in a speech.