Something that I had to do while I had an internship for the state I live in, was look up medical board hearing notes. They have a stenographer recording everything they do in those sessions. During medical board hearings, the medical board members confront people regulated by it about alleged misconduct, the person or their attorney can make statements, and the medical board decides punishments - fines, suspensions, permanent revocations, etc.
Violations were anything from fraud related charges, DUIs, to sexual misconduct. Many times when a doctor gets in trouble with the law they have to discuss it with the governing body of that profession. More than half of what I went through, easily, was because of sexual misconduct or abuse of prescribing narcotics. Now...this included a range of things as far as the sex stuff went. There were doctors who got into relationships with people consensually (which they aren't supposed to do), and love them and everything, and might not get punished at all, the board might just reaffirm with them that it was unethical to do that and send them on their way. The other end of the spectrum was rape - and those people obviously lost their medical licenses and had much bigger problems to deal with. Most were in between, but closer to the first one. During these types of things obviously the patient's name was confidential and referred to in the investigation reports as 'Patient 1' or something like that - the reports get pretty graphic.
So there are definitely some people who abuse their authority in those professions - I had to do the same looking through the nursing board records and others as well - and I'm reasonably certain that in my state at least, someone who would chaperone for a doctor would be regulated by someone somewhere. I doubt a secretary would be back there, it would likely be an STNA, LPN or other. I'm not saying it doesn't happen, but probably someone back there wouldn't be able or be willing to say anything, even anonymously, because of how seriously privacy concerns are taken. Personally if I were in a medical profession I wouldn't talk about much of anything just because of privacy concerns.
My wife and I recently actually almost went to the medical board for an issue at her last doctor's appointment concerning some things. She wanted to bring me, and the assistant very forcefully and loudly confronted her about it in the waiting room, in front of about ten people (half of whom were male patients - it was an internists office not an obgyn). So we finally got a hold of the office manager and he apologized and told her he'd make sure that everyone knew how to handle personal information, and what to do if the patient wants a family member to come back with them. He wasn't too happy to hear about how it went down and was really glad she called him. It really made her feel better, but she still isn't going back there.
As far as police go, I would be very surprised to find any who divulged personal info online about people they dealt with on the job, and it isn't even regulated quite as closely as medical privacy concerns are. They might reference an experience they had on the job but aren't supposed to divulge confidential information about people unless there's a clear reason for it.