Covid meds

When I was a teenager in the 60s docs still made house calls in rural small town America.

Every six months they pull blood and check; The "doc" fills out the computer form to get his medicare $. If I mention any ailment all I hear is "you are old". Yep 76, but I have heard this for 6 years before I was !!!
I have had a reasonably full life.
I have a belief that, they look at your insurance, they know what you need but they'll charge "a la carte" against your insurance for everything covered before they actually perform the procedure that is actually needed. I cant prove it but...I see what people go through at a doctors office. Lets use a diabetic toe for example theyll treat it give pills and make the person go through 1 year of trial and error and pain before actually amputating it...