Paras hospital - how good / bad is this place for an employee that wants to be ethical?

Hi everyone, I got a job offer from Paras Hospital. I work as a healthcare consultant, happen to be a doctor too. I am very clear I do not want to work with shady hospitals, and by that, I mean i) paying doctors to refer patients, ii) billing patients for unnecessary services and services which were not rendered, iii) providing substandard care and harming patients. From what I see, the group has launched a paid campaign on Twitter with the hashtag #ParasHealth and that in itself is quite jarring. Also read a few accounts laying out misgivings with this place. Found that one of their hospitals in Bihar has been de-empaneled from a govt. health scheme provider network. One of my colleagues is joining them as a finance head. The person is not a stickler for principles, but I would nonetheless like to give him fair warning. What have your experiences with this group been like? Both the good and the bad. Let me know, thanks.