Did doctors really do house calls like in the early sitcoms?

Yes, many years ago, Doctors really made house calls. He can to my house to stitch up my cut.

It was never really common, but many doctors made housecalls in special cases up until the 70s. After then, the practice basically died out due to stricter govt regulations and malpractice fears.

Yes, and they still do in other countries. I was staying with a friend in France once, in a house way out in the country. Someone there had had a wound treated, and a nurse bicycled to the house every day to change his dressing. Another person was sick and visited by the doctor. We have a lousy medical system, and not enough doctors. 

We know and I remember house calls by doctors. They didnt charge as much as they do now. Nobody needed insurance. You paid cash.

I'm old enough to have had house calls when I was sick as a kid.  Not extremely sick, just regular sick, no special arrangements or extra fees, just my family doctor came to our house to check up on me, or anyone that was sick.  So yes, that was a real thing.