Complaints against an insurance company in California go to the California Department of Insurance (CDI), which accepts them free of charge online at cdiapps.insurance.ca.gov or by phone at 1-800-927-4357.1California Department of Insurance. File a Complaint California does not have a separate “insurance board” — CDI is the single state agency that regulates insurers, agents, and brokers, and it’s the body that investigates consumer disputes over denied claims, delayed payments, billing errors, and deceptive sales practices. Before CDI will get involved, you generally need to have already given your insurer a chance to fix the problem.
How to File
The online portal is the fastest route. The form moves through six steps: selecting the nature of the complaint, entering your contact information, describing what happened, attaching supporting documents, completing an authorization form, and submitting.2California Department of Insurance. Create Complaint If you’d rather not use the web form, the 1-800-927-4357 hotline takes complaints by phone.1California Department of Insurance. File a Complaint
You don’t have to be the policyholder. CDI accepts complaints from beneficiaries on life or health policies, third-party claimants (for example, when another driver’s insurer is stonewalling you after a crash), businesses, healthcare providers who aren’t being reimbursed, and attorneys or other representatives filing with proper authorization. Former insurance company employees can also report illegal conduct, and the department can use those reports to launch broader investigations.
One thing to do before you file: contact the insurance company and let it respond. CDI expects you to use the insurer’s own internal process first. If the insurer ignored you, denied your appeal, or gave you an answer you can’t live with, that’s the point where CDI steps in. Keep a record of every call, email, and letter from that back-and-forth. You will need it.
Health insurance disputes over a denied medical treatment have a separate track called an Independent Medical Review. You still file an appeal or grievance with the insurer first; if you don’t get a satisfactory response within 30 days, you can submit an IMR application to CDI.2California Department of Insurance. Create Complaint
What to Have Ready Before You File
A well-documented complaint moves faster. At a minimum, pull together:
- Your policy, or at least the declarations page showing coverage.
- The claim you submitted and the insurer’s denial or response letters.
- A dated log of your communications with the company, including when you first reported the claim and every follow-up.
- Any reference or claim numbers the insurer assigned. CDI staff will contact the insurer during the investigation, and a reference number cuts time off that step.
The rest depends on what the dispute is about. For a health insurance denial, add medical records, your doctor’s recommendation for the treatment, and the insurer’s written explanation of the denial. For auto or homeowners claims, add repair estimates, contractor invoices, and photos of the damage. If you’re alleging that an agent misrepresented your coverage, hold on to any emails, marketing material, or written quotes you received before buying the policy.
What CDI Can and Can’t Do
CDI’s Consumer Services Division reviews the complaint, requests the claim file from the insurer, and evaluates whether the company followed the law. The Commissioner has broad statutory authority to examine any admitted insurer’s business affairs and compel production of records.3California Department of Insurance. About the Department If the analyst concludes the insurer broke a rule, CDI can mediate a resolution, which may mean requiring the company to pay a claim, correct a billing mistake, or reprocess a denial.
When the conduct is more serious, the enforcement toolbox gets heavier:
- Corrective orders directing the insurer to reprocess a claim, issue payment, or refund overcharged premiums.
- Civil penalties under Insurance Code Section 790.035 of up to $5,000 per violation, or up to $10,000 per violation if the conduct was willful. Those numbers compound quickly when a bad practice has been applied across many policyholders.4California Department of Insurance. Applicable Laws and Penalties
- Cease-and-desist orders halting a particular practice. Violating one carries its own penalty of up to $5,000, or up to $55,000 if willful.
- Suspension or revocation of an agent, broker, or insurer license for fraud, dishonest conduct, or repeated violations.5California Legislative Information. California Code INS 1738 – Suspension or Revocation of Permanent License
- Referral of fraud or other criminal conduct to the California Attorney General or local prosecutors, which can lead to charges, jail time, and court-ordered restitution.
What CDI will not do is also worth knowing. It won’t award you personal damages, it won’t act as your lawyer, and it can’t override policy terms that are legally valid even if you think they’re unfair. CDI’s job is regulatory enforcement — making sure the insurer obeyed the law. Compensation beyond what the policy itself owes requires a lawsuit.
If Your Health Coverage Comes Through a Self-Funded Employer Plan
Most large employers don’t buy insurance from a carrier; they pay claims out of their own funds and hire an administrator to handle paperwork. Those self-funded plans fall under the federal Employee Retirement Income Security Act (ERISA), and CDI has no jurisdiction over them even when the administrator is a California insurance company. Complaints go instead to the U.S. Department of Labor’s Employee Benefits Security Administration at 1-866-275-7922.6California Department of Insurance. Health Care Providers Guide to the Complaint Process Plans sponsored by school districts, municipalities, and churches sit outside both CDI and the Department of Labor; the only remedy may be filing directly with the plan or going to court. If you aren’t sure what type of plan you have, check the plan documents or ask your employer’s HR department. The words to look for are “self-funded” or “self-insured.”
What Happens After You File
CDI doesn’t publish a guaranteed timeline, and complicated cases take longer than simple ones. The department does prioritize by severity, so a complaint involving ongoing medical treatment or imminent financial harm tends to move faster than a routine billing dispute. Stay responsive if CDI contacts you for additional information; delays on your end slow everything down.
When an investigation uncovers systemic misconduct, CDI escalates to its enforcement division. The matter can go to a formal administrative hearing where both sides present evidence, and the Insurance Commissioner reviews the resulting proposed decision and can adopt, modify, or reject it. You generally won’t be driving that process, but the record you created when you filed may be part of it.
When a Complaint Isn’t Enough
The CDI route works well for clear regulatory violations: a missed deadline, a wrong coverage calculation, a claim that sat in a drawer. For higher-stakes disputes, other professionals may do more for you than a regulator can.
An insurance attorney makes sense when the money at risk is substantial and the insurer appears to be acting in bad faith. A refused six-figure life insurance payout, or a health denial that’s blocking critical treatment, often needs remedies CDI can’t provide. California law allows punitive damages in cases involving fraud, oppression, or malice, but those are available only through a lawsuit.7California Legislative Information. California Code CIV 3294 – Exemplary Damages Insurance bad faith attorneys usually work on contingency, so you pay nothing upfront and they take a percentage of what they recover.
For a property claim after a fire, flood, or similar loss where the real argument is over the dollar amount, a public adjuster is often a better fit than a lawyer. Public adjusters are licensed professionals who document damage, interpret policy language, and negotiate with the insurer. They can’t give legal advice or appear in court, and they typically charge a percentage of the final settlement.
Hiring either one doesn’t shut the regulatory door. Filing a CDI complaint in parallel costs nothing and creates a record that can push an insurer toward settling.