You would call them a Forensic Scientist.
It depends on what you mean. I'm assuming you mean some doctor has acted inappropriately toward you. You have a couple of options. If the doctor works for a hospital or clinic, you can report the doctor to the hospital director or the doctor's supervisor. If the doctor works for him or herself, you have fewer options, but if what the doctor did is criminal, you can file a complaint with the AMA (if you are in the USA) or the corresponding organization if you are in another country, or to the police or other appropriate authority.
chiropractor
it usually depends on what kind of doctor, and what times you are on call and stuff
Podiatrist
A squad
A neurologist works on problems with the brain and nervous system.
24/7 which means you can call them at 5am and they'll come straight to your door
You're probably looking for an orthopedic doctor. They specialize in bone and joint issues.
You call a doctor and then if the doctor would like to see them, u drive them to the doctor..
Yes, a doctor can call another doctor to help.
If your brother is a criminal you should call the police and ask them what to do from there.
Narc, snitch or rat.