Doctors versus Phamacists

I read a story on the USA Today site. Apparently pharmacists can refuse to serve whomever they desire(Druggists refuse to give out pill). I just don’t understand how the pharmacists can get away with NOT passing the prescriptions on to other pharmacists.

I have great respect for the pharmacists. These folks know their stuff. I trust the pharmacist to know my medication better than my doctor does. Cause, frankly, the pharmacist has saved my wife and I a couple of times.

So what is this wacky behavior about?