Who Pays Medical Bills After a Car Accident in California? (And Who Pays Nationwide)

The answer depends on two things: which state the crash happened in, and what insurance is available. This page explains how California's fault-based system works, how no-fault states work differently, and what medical liens mean for your claim.

Are you in the right place? Quick eligibility check

• Were you injured in a motor vehicle crash? Yes / No
• Did someone else's driving contribute to the crash? Yes / No
• Are you receiving, or have you received, medical treatment for injuries from the crash? Yes / No
• Do you have medical bills that are unpaid, in collections, or subject to a lien? Yes / No
• Do you have health insurance, MedPay, or PIP coverage that might apply? Yes / No

If you answered yes to the first three questions, your situation may involve a liability or lien issue worth reviewing.

Who pays first: the short answer (fault states vs. no-fault states)

The United States uses two basic frameworks for auto accident medical bills. In fault states, the driver who caused the crash is generally responsible for the other person's damages, including medical costs. In no-fault states, each driver's own Personal Injury Protection (PIP) coverage pays initial medical costs regardless of who caused the crash.

California is a fault state. The state where your crash happened controls which framework applies to you.

California: a fault state and how the at-fault driver's insurance fits in

Because California uses a fault-based system, the at-fault driver's liability insurer is generally responsible for the injured person's medical costs. But liability insurers typically do not pay bills as they come in. Payment usually happens after treatment is complete and a claim is resolved through settlement or judgment.

That gap can last weeks or months. During that time, medical bills can go unpaid unless you use other coverage.

California raised its minimum auto liability insurance limits effective January 1, 2025. The new minimums are $30,000 per person and $60,000 per accident for bodily injury, and $15,000 for property damage. These are minimums only. The at-fault driver may carry more, or they may carry only the minimum.

MedPay, health insurance, and your own coverage while the claim is pending

Three sources can help pay bills before a claim settles:

• Health insurance: Your own health plan may cover crash-related treatment. The insurer may later seek reimbursement from any recovery you receive.
• MedPay: Medical Payments coverage is optional in California. If you purchased it, it can pay crash-related medical bills up to the policy limit, regardless of fault.
• PIP: California is not a no-fault state and does not require PIP. If your crash happened in a no-fault state, your own PIP coverage would apply. PIP requirements and limits vary by state and are not the same as California's rules.

If you are uninsured and have no MedPay, some medical providers will treat you under a medical lien arrangement, described in the next section.

What a medical lien is and how it affects what you keep

A medical lien is a formal claim a provider places on your future settlement or judgment. Instead of billing your insurance upfront, the provider agrees to wait for payment until your case resolves. When you settle, the lienholder is paid from the proceeds before you receive your share.

California law recognizes a hospital's right to assert a lien on a patient's recovery from a third party under the Hospital Lien Act (California Civil Code sections 3045.1 through 3045.6). Other types of providers may also assert liens under separate legal frameworks.

A lien does not disappear on its own. If you settle a case without addressing outstanding liens, those creditors may still have legal rights against you. How liens get resolved is a question for a licensed attorney familiar with your state's rules.

Your own health insurance may also have subrogation rights, meaning it can seek reimbursement from your recovery. The scope of those rights depends on the type of plan and the state, so check with your plan or an attorney about what applies to your situation.

No-fault (PIP) states: how the rules differ from California

In no-fault states, each driver files a claim with their own insurer for initial medical expenses, regardless of who caused the crash. This is designed to speed up access to medical care. But PIP coverage has dollar limits, and once bills exceed those limits, injured people may need to pursue a liability claim against the other driver.

The specific rules for no-fault states, including coverage amounts and the conditions for filing a liability claim, vary by state and are not the same as California's rules. If your crash happened outside California, check your state's insurance department website or consult a local attorney for the rules that apply to you.

How unpaid bills affect what your case is worth

Medical bills are a central part of calculating economic damages in a personal injury claim. Unpaid bills, bills in collections, and bills subject to liens all count toward that total.

In California, the collateral source rule generally means the at-fault party cannot reduce the damages they owe just because your own health insurance paid some of your bills. This rule comes from California common law. Other states have their own versions of this rule, and some have modified it by statute.

Gaps in treatment or long delays between visits can raise questions about whether injuries are connected to the crash, which can affect how a claim is evaluated. Outcomes vary by case.

What to gather before you talk to anyone about your bills

Having organized records helps anyone reviewing your situation give you useful information. Try to collect:

• Copies of all medical bills and statements from every provider
• Your own auto insurance declarations page, which shows MedPay and other coverages
• Health insurance cards and any explanation-of-benefits letters
• The police or crash report
• Correspondence from any insurance company, yours or the other driver's
• Photos of the vehicles and any visible injuries

What to do next

1. Gather the documents listed above.
2. Note which state the crash happened in, since the rules differ.
3. Check your own auto policy for MedPay or PIP coverage.
4. Contact your health insurer to confirm whether crash-related treatment is covered and whether the plan has subrogation rights.
5. Use our lien-doctor finder and case review request on this site to connect with a lien-focused medical provider or attorney who can explain who should be paying your bills and what your claim may be worth. Request a free case review.

This guide is general health information, not medical advice. It does not replace an exam by a licensed clinician. If you have severe or worsening symptoms, call 911 or go to an emergency room.