Generally you cannot get a rank in PK/PD, but there are some universities that have good PK/PD program.
Buffalo is best in PK/PD modeling(Jusko)
UCSF is the best in tansporter (Benet)
UNC, UWashington, UMich, OSU, UMinnesota are very good,
UToronto is good(Sandy Pang)
Temple has a niuren in tansporter
PK belongs to department of pharmaceutical sciences. maybe pharmacology in some universiities (e.g. UToronto),
Never Pharm.D program, that's totally a different thing.