To file a complaint against an insurance company in California, use the California Department of Insurance (CDI). Complaints go through the department’s online portal at cdiapps.insurance.ca.gov or by phone at 1-800-927-4357, and filing is free.1California Department of Insurance. File a Complaint California has no separate “insurance board”; CDI is the state agency that handles consumer complaints against insurers, agents, and brokers, and it can force corrective action when it finds a company broke the rules.
How to File Your Complaint
The online form walks you through six steps: selecting the nature of your complaint, entering your contact information, describing what happened, attaching supporting documents, completing an authorization form, and submitting.2California Department of Insurance. Create Complaint Phone filing at 1-800-927-4357 is the alternative if you’d rather speak to someone.1California Department of Insurance. File a Complaint
Before you submit, contact your insurance company and give it a chance to fix the problem. CDI expects you to work through the insurer’s internal process first. If the insurer ignored you, denied your appeal, or gave you a response you find unsatisfactory, that is when CDI steps in. Keep a record of every call, email, and letter along the way. You will need it.
Health insurance disputes over a denied medical treatment have a separate track called an Independent Medical Review (IMR). You must first file an appeal or grievance with the insurance company. If you do not receive a satisfactory response within 30 days, submit an IMR application to CDI.2California Department of Insurance. Create Complaint
Who Can File
You do not have to be the policyholder. California accepts complaints from several categories of people:
- Policyholders on auto, home, health, life, or business insurance policies in California.
- Beneficiaries named on a life or health policy when the insurer delays or denies payment.
- Third-party claimants — for example, if you were hit by another driver and that driver’s insurer is stonewalling you.
- Businesses disputing workers’ compensation, liability, or commercial coverage decisions.
- Healthcare providers not being reimbursed as required.
- Attorneys and authorized representatives filing on someone’s behalf with proper authorization.
Former insurance company employees who witness illegal conduct can also report it. CDI treats whistleblower reports seriously and can use them to launch broader investigations.
What to Gather Before You File
A well-documented complaint moves faster. At minimum, include your insurance policy (or the declarations page showing your coverage), any claim you submitted, the insurer’s denial or response letters, and a log of your communications with the company. Note when you first reported the claim, when the insurer responded, and every follow-up.
The supporting evidence beyond the basics depends on the dispute. For a health insurance denial, attach medical records, your doctor’s recommendation for the treatment, and the insurer’s written explanation for the denial. For auto or homeowners claims, include repair estimates, contractor invoices, and photos of the damage. If you believe an agent misrepresented your coverage, save any emails, marketing brochures, or written quotes you received before purchasing the policy.
Include any reference numbers the insurer assigned to your claim. CDI staff contact the insurer as part of the investigation, and a reference number speeds that up.
Common Reasons Complaints Succeed
Unfair Claim Denials
Most complaints involve insurers denying claims without a legitimate reason. California Insurance Code Section 790.03(h) lists sixteen specific practices that qualify as unfair claims handling, including failing to investigate claims promptly, misrepresenting policy coverage, refusing to pay when liability is clear, and offering far less than a claim is worth.3California Legislative Information. California Code INS 790.03 – Unfair Practices These rules apply whether the insurer does it once on purpose or so often it becomes a business practice.
Delays
California regulations set hard deadlines. Once your insurer receives proof of your claim, it must accept or deny the claim within 40 calendar days.4Legal Information Institute. California Code of Regulations Title 10 2695.7 – Standards for Prompt, Fair and Equitable Settlements Disability income and mortgage guaranty policies have separate timelines, but for most property, auto, and general liability claims, the 40-day window applies. If an insurer keeps asking for document after document to stall the clock, that itself is a violation; the law specifically prohibits requiring duplicate submissions containing substantially the same information.3California Legislative Information. California Code INS 790.03 – Unfair Practices
Misrepresentation of Policy Terms
Some consumers discover after a loss that what they were told about their coverage does not match the actual policy language. An insurer misrepresenting coverage limits, exclusions, or premium terms can violate California’s Unfair Competition Law, which prohibits deceptive business practices.5California Legislative Information. California Code Business and Professions Code 17200 – Unfair Competition This comes up frequently in life insurance, where beneficiaries find gaps between what an agent promised and what the policy actually pays.
What CDI Does With Your Complaint
CDI’s Consumer Services Division reviews your submission and the documents you attached. In many cases an analyst contacts your insurer directly, requests the claim file, and evaluates whether the company followed the law. If the analyst finds an error or rule violation, CDI can mediate a resolution requiring the insurer to pay a claim, correct a billing mistake, or reprocess a denial.
CDI does not publish a guaranteed timeline, and complex cases take longer than straightforward ones. The department does prioritize by severity, so a claim involving ongoing medical treatment or imminent financial harm tends to move faster. Respond promptly if CDI asks you for more information.
If the investigation reveals more serious or systemic misconduct, CDI escalates to its enforcement division. The response scales with the conduct:
- Corrective actions. For isolated errors, CDI may order the insurer to reprocess a claim, issue a payment, or refund overcharged premiums.
- Civil penalties. Under Insurance Code Section 790.035, CDI can impose fines of up to $5,000 per violation, or up to $10,000 per violation if the conduct was willful. Those numbers add up when an insurer applies a bad practice across hundreds of policyholders.6California Department of Insurance. Applicable Laws and Penalties
- Cease-and-desist orders. CDI can order an insurer to stop a particular practice. Violating one carries its own penalty of up to $5,000, or up to $55,000 if willful.
- License suspension or revocation. The Commissioner can suspend or revoke the license of an agent, broker, or insurer engaged in fraud, dishonest conduct, or repeated violations.7California Legislative Information. California Code INS 1738 – Suspension or Revocation of Permanent License
- Criminal referral. Fraud or other criminal conduct can be referred to the California Attorney General or local prosecutors, potentially leading to charges, jail time, and court-ordered restitution.
What CDI Cannot Do
CDI will not award you personal damages, will not act as your lawyer, and cannot override policy terms that are legally valid even if you disagree with them. Its role is regulatory enforcement — making sure the insurer followed the law. If you need compensation beyond what the policy owes, that requires legal action.
CDI also does not regulate self-funded employer health plans. Most large employers do not buy insurance from a carrier; they pay claims out of their own funds and hire an administrator to handle paperwork. Those plans fall under the federal Employee Retirement Income Security Act (ERISA), so CDI has no jurisdiction even when the plan administrator is a California insurance company. Complaints go to the U.S. Department of Labor’s Employee Benefits Security Administration at 1-866-275-7922.8California Department of Insurance. Health Care Providers Guide to the Complaint Process Plans sponsored by school districts, municipalities, and churches sit outside CDI’s reach as well, and the Department of Labor does not regulate those either; your only remedy may be filing a complaint directly with the plan or pursuing legal action.
Not sure which type of plan you have? Check your plan documents or ask your employer’s HR department. If the plan is “self-funded” or “self-insured,” CDI will not handle your complaint.
Federal Tracks for Health Insurance Disputes
Some health disputes have a parallel federal option worth knowing about.
If your health insurer denies a claim involving medical judgment — such as whether a treatment is medically necessary or is being labeled experimental — you can request an external review. An independent reviewer outside your insurer examines the denial and issues a binding decision. You must file within four months of receiving the denial notice.9HealthCare.gov. External Review Standard reviews take up to 45 days; urgent medical cases can be decided within 72 hours. There is no charge to you.
Medicare beneficiaries follow a separate five-level appeal process. The first level is a redetermination by the Medicare Administrative Contractor, followed by reconsideration, a hearing before an administrative law judge (for disputed amounts of $200 or more in 2026), and further levels of review.10Medicare.gov. Appeals in Original Medicare Those appeals go through Medicare’s own system, not CDI.
When to Bring In an Attorney or Public Adjuster
CDI’s complaint process works well for clear regulatory violations: a missed deadline, the wrong coverage amount applied, an ignored claim. Some situations call for outside help.
An insurance attorney becomes worth the cost when the financial stakes are high and the insurer is acting in bad faith. If a life insurance company refuses to pay a six-figure death benefit, or a health insurer’s denial is blocking access to critical treatment, a lawyer can pursue remedies CDI cannot provide. In cases involving fraud, oppression, or malice, California law allows courts to award punitive damages on top of actual losses, but only through a lawsuit.11California Legislative Information. California Code CIV 3294 – Exemplary Damages Attorneys handling insurance bad faith cases typically work on contingency, so you pay nothing upfront and they take a percentage of any recovery.
For property damage claims after a fire, flood, or other covered loss, a public adjuster can be a more cost-effective option than a lawyer. Public adjusters are licensed professionals who document damage, interpret policy language, and negotiate settlements with your insurer. They cannot give legal advice or represent you in court, but for a property claim where the main dispute is the dollar amount, they are often the right fit. They typically charge a percentage of the settlement.
A working rule: if the dispute is about how much your insurer owes on a property claim, start with a public adjuster. If it involves bad faith, retaliation for filing a complaint, or a coverage denial worth tens of thousands of dollars, talk to an attorney. Filing a CDI complaint in parallel costs nothing and creates a regulatory record that may pressure the insurer to settle.