Poppagator, blood banks and transfusions are touched-on in one of the sites linked to above. The following Link was posted on one of those sites.

This matches everything I've seen so far about the transfusions and blood banks.

If you were thinking of Dr. Drew, then I think it's a more a case of improving or advancing what existed previously regarding the storage of plasma. No small feat in itself, but different from coming up with or developing the actual concept.