What to Do When Your Doctor Bills You After Insurance Already Paid

Receiving a bill from your doctor after your insurer has already paid can feel like being charged twice. Sometimes it is a billing error. Sometimes it is legitimate. Here is how to tell the difference.

Why this happens

When a provider submits a claim, the insurer processes it and sends both the provider and you an Explanation of Benefits showing what was paid and what your share is. Some providers then send patients a bill for the patient responsibility amount shown on the EOB. This is correct behavior.

The problem occurs when providers bill patients for amounts beyond their legitimate cost-sharing. This happens in several common scenarios.

The provider did not apply the contractual adjustment. In-network providers agree to accept the insurer's allowed amount as payment in full. They cannot bill you for the difference between their charge and the allowed amount. This difference is called a write-off or contractual adjustment and must be subtracted before calculating your share.

The insurer's payment was processed as out-of-network. If your provider is in-network but the claim was processed incorrectly, you may receive a bill showing higher cost-sharing than you owe. This is a claims processing error.

The provider balance billed you improperly. Balance billing means charging you the difference between what the provider billed and what insurance paid. For in-network providers, this is prohibited by their contract with the insurer.

How to verify what you actually owe

Pull your Explanation of Benefits for the date of service. Find the line item showing the allowed amount, the amount insurance paid, and the patient responsibility. The patient responsibility on the EOB is what you legitimately owe, not the amount on the provider's bill.

If the provider's bill matches the patient responsibility on your EOB, you owe that amount. If the provider's bill is higher than the EOB patient responsibility, you have grounds to dispute it.

Disputing an incorrect bill

Contact the provider's billing department with your EOB in hand. State specifically that the bill exceeds your patient responsibility as shown on your insurer's Explanation of Benefits. Ask them to resubmit the claim or adjust the balance to match the EOB.

If the billing department cannot resolve it, call your insurer and ask them to contact the provider directly. Insurers have contractual leverage with in-network providers that patients do not have.

Document every call with the date, the representative's name, and what was discussed. Send a follow-up email or letter summarizing any verbal agreements.

When the bill is from a collection agency

If the account has already been sent to collections, you still have rights. Request validation of the debt in writing within 30 days of first contact. The collector must provide documentation showing the original creditor, the amount, and how it was calculated. Review this against your EOB before taking any action.

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Bill Advantage is a document literacy tool. Nothing in this article constitutes legal or medical advice.