OP I dont think robots will be replacing anyone in our generation.
As soon as computer hardware can be integrated with our brain I dont think there will really be a need for any physicians. Its called the singularity and its coming in the next few hundred years.
The rate processors and hardware increases...eventually every word, ever video, ever picture, and computer program will be stored in the size of a watch battery implantable into your brain and the processors will be able to outpace the human brain by millions of time.
Of course far before that inject-able nanotechnology will control everything in our body...so most physicians will not be needed.
If you had nanobots to deliver oxygen, kill cancer, and regulate every chemical concentration throughout the body what are physicians going to be needed for?
Although its doubtful anyone posting on this thread will see this in their lifetime.....maybe my grandchildren.