Surgery: you'll be working with at least 3-5 people in the operating room. You'll also have to examine lots of patients to determine whether they need surgery or not and alleviate their fears concerning the operations. Lots of treatments are becoming more conservative, i.e. no surgery at all. After surgery, you'll have to examine patients to assess their recovery and motivate them. Obviously there are surgeons who chose the specialty because they don't like working with people, and I think that's unfortunate, because they're doing a half assed job. Many surgeries are quite long, and require you to be standing hours at a time not necessarily in a very comfortable position. To become good, you'll have to specialize, so you'll be doing the same procedures over and over again.

Radiology: have you considered that this kind of image recognition is a low hanging fruit for a narrow A.I.? I considered radiology too, but this is one of the main reasons I won't anymore. Also, radiology is easy to do via the internet, so that might lower the earning potential if hospitals hire radiologists overseas. If you're doing ultrasounds or become an intervention radiologist, there will be a lot of patient interaction, if you're a neuroradiologist, pretty much none at all.

Pathology or forensic pathology: you'll usually work alone or with 1-2 other people. You'll have to explain the findings to other doctors and the patients relatives though. The earning potential isn't probably that high, in forensic pathology it might be, I don't know.