How much is take home pay for a doctor?

No answer you get here will be meaningful. Every situation is different. Every doctor in every location makes a different amount of money, and every one of them have different insurance and loan debt. You need to be specific about type of doctor, and location if you want a better answer. 

Residents make like $40/hr, real doctors (not like residents are fake doctors) make a lot more.  Let’s see.  Where i work the average salary would depend in what kind if doctor you are.  Around $250k/yr for a family physician, and up to $500k/yr for a specialized surgeon.  Soecialized doctor falls somewhere between them.  When my sister was going out with a doctor where she lives now he was making ~$750k/year.  He’s an eye surgeon

Varies  widely

Are they private practice,  group practice,  hospital employee, military or VA Dr?

Are they any specialty ?

The good days are slowly disappearing as most doctors, once they complete training, do not hang a shingle on the door and open a practice these days. Most are hired by Corporate facilities and are on salary, often starting at only $70-85K annually. The doctors who remain in private practice are disappearing in the USA.

there is no way to answer this at all, many docs are independent contractors and malpractice may be carried by a group not individual. Physician income is dependent on many many factors so there is no one answer

That varies wildly and you also have to consider the years of income lost in a working life while the person was in school.  I can say this - the malpractice insurance for many doctors in America is more than the annual salaries of many doctors in Europe because they have different tort laws. 

There is no single answer to your question.  Doctors who are just out of medical school are probably working in a hospital or small medical practice and are not earning a lot of money.  However, doctors who specialize in expensive surgeries can make millions.

You clearly do not know what "take home pay" means.

And why would you think that all doctors have student loan payments and of the same amount?