They are not estimating 1500 deaths because of Fukishima.
As noted in the title, the panic caused by the mass evacuations etc (e.g. moving people from hospitals) may have caused 1500 deaths.
Of course there are few (I think there may be a couple if I recall from workers in cleanup?) from radiation.
And of course 15,893 (wikipedia) deaths from the tsunami and earthquake.
Moral of the story is that even poorly designed and implemented power plants are less dangerous to your health than poorly sited and implemented housing. Spend the money on where and how people live to protect them from tsunamis and earthquakes. Then, maybe, spend money upgrading your nuclear facilities.