Lu is also a massive hypocrite. The rules never apply to her because everything is for her patients, you see. If the ends justify the means of what she believes is right, it's all good.
When Andy found that abandoned baby in the hospital's dumpster who died, she was all about HER patients' privacy when she wouldn't let the cops have their files to see if any of them had anything to do with the crime. (03x22 - "Risk")
But, a few episodes later, it was perfectly justified for her to manipulate the Records guy at the county hospital and violate THOSE patients' privacy so that she could find out who Cali's biological parents were so that they could be tested for a bone marrow transplant (because the county hospital gave two families each others' baby by mistake). (04x03 - "Heartbeats & Deadbeats")
04x02 - "Emergency Contacts" - And how she just easily lied to potential adoptive parents, Andy's patient and her husband, about the baby possibly having Spina bifida and violated Rina's, a pregnant teen, who was a minor, privacy and medical information to 'test' them to see if they were worthy, just because they were rich. They could not possibly be good parents just because they have money. She thought they would give up if they found out the baby had a disability, and it did not sway them. Her 'perfect, middle class' adoptive couple were the ones who backed out, even though the baby's medical expenses would have been covered by the RWHC, because they would not have been able to handle the stress. Rina was not under any legal obligation to give Lu's patients the baby; she was free to change her mind at any point.