Yes, just as there are crooks in every profession, those in the medical field aren't all honest caring individuals out to better the world. Many are just trying to better their wallets & purses. Just go through some of the malpractice suits filed & or convictions. Doctors performing operations that were unneccessary, operations where they did nothing but cut up a patient, false insurance claims, you name it they've done it. My favorite was a doctor that killed his patient that looked like him to collect his own life insurance-follow that 1
Doctors order more tests so that their patients don't die of some undiagnosed illness and then their families turn around and sue the doctor. You are always free to disregard the doctor's opinion and not get the testing done.
I can tell you this--Doctors get what they call units. (RVU's) For EVERY test, including labs, they get a kickback, which is a % of RVU's. The more test and labs they order, the bigger their paycheck is. For real.