Party's Over - S2-E5
Question: Does the pharmacist that Longmire talks to violate any sort of confidentiality laws? Walt doesn't come in with a warrant, but the pharmacist is giving Walt information pertaining to other people still alive, not just the victim. I could see the law allowing him to tell Walt "no" that someone didn't pick up any prescriptions, but to mention she picked up antibiotics or that Gerry had back surgery seems unethical.
Answer: This appears to be movie fiction. In real life, a pharmacist could not legally give out confidential patient information without there being a search warrant. Not abiding by confidentiality laws could result in a pharmacist facing legal issues and losing his or her license.