So why not reform the legal system and let the doctors practice medicine?
Also — testing saves lives. If you don’t test, many deadly or at least serious diseases are not uncovered until it’s too late, not to mention, that by then the treatments are more expensive and less helpful.
The emphasis should be on testing, to discover diseases early, when they are more treatable, and less expensive to treat. The cost of testing is nothing in comparison to the cost of treatment when diseases are discovered in more advanced stages, because there was no testing early enough.
Except that if you're testing for a condition that only one person in a 1000 has, you've paid for needlessly testing 999 people to find that 1-in-a-1000 person.
How much does it cost to test those 999?
Testing can take lives too. Sure, testing vials of blood for everything under the sun will most likely cost nothing but money.
But CAT scans? Exploratory surgery? There are risks.
A real life example of an what turned out to be an unnecessary work-up with significant risks along the way, a search to see if new hypertension is secondary to another cause. Patient has MRI with gadolinium contrast (rare risk of scleroderma-like illness). MRI reveals adrenal mass of intermediate size - should be monitored. MRI also reveals possible malformation of renal arteries. Patient undergoes blood and urine testing to see if adrenal mass is functional - it is not. Patient opts to have adrenal gland removed rather than face monitoring over the years. (Anesthesia, surgical, infectious risk). Mass is benign. Patient opts to have further exploration of arterial malformation, via an arteriogram with iodine contrast die through the femoral artery. (Allergy risk, bleeding risk, infection risk, radiation exposure - cancer risk.) Arterial malformation revealed to be an artifact of MRI. No cause found for hypertension, hypertension responds well to medication and eventually requires lower doses. Patient could have lived out life in safe ignorance.