Insurance companies aren't doctors. So why do we keep letting them practice medicine?

We know how important it is to have insurance so that we can get health care. As a physician, parent and patient, I cannot overemphasize that having insurance is not enough.

As a gastroenterologist, I often prescribe expensive medications or tests for my patients. But for insurance companies to cover those treatments, I must submit a "prior authorization" to the companies, and it can take days or weeks to hear back. If the insurance company denies coverage, which occurs frequently, I have the option of setting up a special type of physician-to-physician appeal called a "peer-to-peer."

Here's the thing: After a few minutes of pleasant chat with a doctor or pharmacist working for the insurance company, they almost always approve coverage and give me an approval number. There's almost never a back-and-forth discussion; it's just me saying a few key words to make sure the denial is reversed.

Because it ends up with the desired outcome, you might think this is reasonable. It's not. On most occasions the "peer" reviewer is unqualified to make an assessment about the specific services. They usually have minimal or incorrect information about the patient. Not one has examined or spoken with the patient, as I have. None of them have a long-term relationship with the patient and family, as I have.

The insurance company will say this system makes sure patients get the right medications. It doesn't. It exists so that many patients will fail to get the medications they need.

I've dealt with this system from the patient side, as well. My daughter has a rare genetic disorder called Phelan-McDermid Syndrome, which causes developmental delay, seizures, heart defects, kidney defects, autism and a laundry list of other problems. She receives applied behavior analysis therapy, an approach often used for autism, and which has been wildly successful in improving her skills and communication. But recently, our health insurer reduced the amount of therapy they thought she needed.

While I know what levers to pull from the physician side, a patient's options are completely unclear. I probably have better access than almost anyone else can get, yet the ability of my daughter's providers to mitigate denials for services they deem appropriate is slow and often ineffective.

Consumers have a right to appeal denials for health care services, but regulations still largely focus on the process, not the content. For instance, insurers are required to notify you in writing of a denial, and patients have the right to an internal appeal; if that fails, some states also allow for an external review.

This sounds good, as most denials are related to specific provider choice or contractual issues, which are relatively easy to remedy (but a problem nonetheless). But other denials are a judgment of some test or treatment as "not medically necessary."

Insurance companies know that many patients don't bother to appeal at all. A smaller fraction ask for an internal review, and still fewer seek or even know about external review options available in most states. Of the cases that do end up under external review, almost a third of all insurer denials are overturned. This is clear proof that whatever process insurers have to determine medical necessity is often not in line with medical opinion. A study of emergency room visits found that when one insurance company denied visits as being "not emergencies," more than 85% of them met a "prudent layperson" standard for coverage.

Some might argue that it makes sense to have two doctors discuss a case and then come to a consensus on the most cost-effective approach for an individual. That's not what is happening. This is a system that saves insurance companies money by reflexively denying medical care that has been determined necessary by a physician. And it should come as no surprise that denials have a disproportionate effect on vulnerable patient populations, such as sexual-minority youths and cancer patients.

We can do better. If physicians order too many expensive tests or drugs, there are better ways to improve their performance and practice, such as quality-improvement initiatives through electronic medical records.

We don't have to put up with this. Health care in the United States is shockingly opaque; it's time to take insurance companies out of our decisionmaking process.