Do not become a doctor. First, if doing it for the money you will be miserable. Second, there is no way around liability insurance. There are no specialties exempt from being sued (although obviously the types and severity of suits vary by specialty).

If pay and liability insurance are your main issues, then go into pharmacy or nursing. They pay quite well and pay a whole heck of a lot less in insurance. Although even here, if your main goal is loads of money, you will grow to hate your job.
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Im a doctor.

THERE AREN’T ANY.
All the jobs that pay, like doctors, surgeons, anesthesiologists, radiologists, ALL have call, ALL need malpractice insurance, ALL can get sued, and ALL are doctors.
A radiologist is an MD that specializes in reading xrays and cat scans/MRIs. You would think that’s pretty safe, but if he reads it wrong and someone gets sent home when they should go to surgery…. guess what? He gets sued!
EVERY medical job, even CNAs can be sued. It’s just the nature of the profession, and the culture, that they will sue anybody for anything, if they think they can make a dollar.
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ER nurse, getting out and going into pharmacy!

The only one I could think of that would lower your risk would be a pathologist. The worst thing that would happen is you would characterize a death as natural causes when it was in fact homicide. Very few if any pathologists get sued. Also, you don’t need any sort of a bedside manner.
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Be an actor and play a doctor on TV. That’s about it.

Gee, I’d like to not work hard and make a crapload of money too, but that’s not how the real world works. Grow up.
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