What Is a Medical Provider Network (MPN) in California Workers' Compensation?

Do you have to use the MPN doctors?

In most cases yes. You treat inside the network the insurer set up. But you pick the doctor in it, and you can switch.

The MPN is a list of approved doctors. The three letters stand for Medical Provider Network. Your employer's insurer builds this network under Labor Code 4616. Most injured workers must treat inside it. That rule can feel one-sided at first. It can feel like the insurer controls your care.

But here is what many workers miss. You still pick the doctor on the list who treats you. You can read the full network list first. You can pick the doctor who feels right for your injury. If that doctor is not helping you heal, you switch to another. You do not need anyone's permission to switch. You stay in charge of your own care.

Your care stays free the whole time. You pay no copay. You get no bill for approved care under Labor Code 4600. The insurer pays your doctor directly. The network has limits too. The insurer must offer enough doctors close to your home. If it does not, you have more options, covered below.

Can you pick your own doctor before you get hurt?

Yes, but only if you act early. You must name your own doctor in writing before the injury. This is called pre-designation.

Maybe you have a family doctor you have seen for years. You may want that same doctor for a work injury too. You can, but you must act early. You must name your doctor in writing before you get hurt. This right comes from Labor Code 4600(d). Workers call it pre-designation.

A few simple rules apply to this. Your doctor must agree to it ahead of time. Your job must offer group health coverage. You must put the request in writing and keep a copy. Give that copy to your employer before any injury. If you do all this in time, your own doctor treats you. They can treat you outside the MPN entirely.

Most workers never hear about this rule. So they get stuck with the insurer's list after an injury. If you are reading this while still healthy, set it up now. Ask your employer for the pre-designation form today. It is one of the strongest rights you have.

What are your rights inside the MPN?

You can choose your first doctor, switch doctors, and get a second or third opinion. Your visits and treatment stay fully paid.

You hold more power than the insurer lets on. You can choose, switch, and seek other opinions. Here are your main rights inside the network. Keep this list handy when you talk to the adjuster.

These rights are real and free to use. Use them if a doctor is not listening to you. A second opinion means another MPN doctor reviews your case. A third opinion is one more after that. These extra opinions can change your whole claim. They can prove how hurt you really are.

What if no MPN doctor near you can help?

You can ask to see a doctor outside the network. If no fit doctor is close by, the insurer must help you find care.

First, find your MPN list. Ask your claims adjuster for the network name. Then look it up online or call the number on your paperwork. The list shows approved doctors near your home. Pick the closest one who treats your kind of injury. Booking early helps you heal faster.

Sometimes the list has no good doctor near you. Maybe none of them treat your type of injury. Maybe the closest one is hours away. Tell your adjuster right away and in writing. The insurer must help you get proper care. In some cases you can treat outside the network. You should not drive for hours for care you are owed.

Sometimes the insurer denies a treatment your doctor ordered. That denial comes from Utilization Review under Labor Code 4610. You can fight it. You appeal through Independent Medical Review, and you must move fast. Here are the key deadlines to watch.