You'd really need to show some numbers to back this up.

Is the cost of funding the "research complex" included in the expenditure on health care?

At least some of this cost is born by the Federal government, foundations etc, is this counted as general health care expenditure (I doubt it)

Some of the research is funded by companies - since they sell globally this funding cannot be counted as purely of US origin.

Other countries also have significant health research - e.g. UK, France, Germany - your point would also apply to them.

Overall your point is dubious, and vague - you'd need to present some solid numbers to back it up.