California residents with medical billing disputes should first file a grievance with their health plan. If unresolved after 30 days or if they disagree with the decision, escalate to the Department of Managed Health Care (DMHC) for HMOs and certain PPOs regulated under the Knox-Keene Health Care Service Plan Act (sections 1374.30, 1370.4), or to the California Department of Insurance (CDI) for point-of-service plans and certain PPOs underwritten by insurers. DMHC offers a free Independent Medical Review (IMR) process, typically decided within 30 days. This covers state health regulations, not credit card chargebacks or general consumer complaints.
Gather evidence such as bills, Explanation of Benefits (EOB) statements, and correspondence with the provider or plan before filing.
Regulatory Split: DMHC vs. CDI
The DMHC regulates most health plans in California, including HMOs and certain PPOs under the Knox-Keene Act. The CDI handles point-of-service plans and PPOs issued by health insurance companies. Check your plan documents, insurance card, or contact your health plan to confirm which agency oversees it.
This split determines the correct escalation path. For example, DMHC handles complaints and IMR for its regulated plans, while CDI addresses issues with plans under its jurisdiction. Official guidance from DMHC and CDI outlines these roles.
| Plan Type | Regulating Agency | Key Process |
|---|---|---|
| HMOs, certain PPOs (Knox-Keene) | DMHC | Complaint or IMR after 30 days |
| Point-of-service, certain insurer PPOs | CDI | Direct complaint filing |
Step-by-Step Complaint Process
Start by submitting a grievance to your health plan. Some plans resolve standard grievances within 30 days. If the issue remains after 30 days or you disagree with the resolution, file a complaint or request IMR with DMHC for eligible plans. IMR is free and binding on the plan.
For CDI-regulated plans, contact the California Department of Insurance at 1-800-927-4357.
Evidence checklist:
- Copy of medical bills and itemized statements
- EOB from your health plan
- All correspondence with the provider or plan
- Health plan ID card or policy documents showing regulator
Hospital Billing for Uninsured/Underinsured
California's Hospital Fair Pricing Act requires hospitals to offer financial assistance policies for uninsured or underinsured patients, particularly those with high medical costs. Contact the hospital to review its written policy and apply for aid. This is separate from health plan disputes.
What Does Not Apply to Medical Billing Complaints
Medical billing complaints follow California health regulations via DMHC or CDI. Credit card billing disputes or chargebacks have special handling for medical debt. General consumer complaints to the FTC or California Attorney General do not substitute for these health-specific processes. Merchant refund or e-commerce rules do not apply.
FAQ
How do I know if my plan is regulated by DMHC or CDI?
Check your plan documents, insurance card, or call your health plan to confirm. DMHC covers HMOs and certain PPOs; CDI covers point-of-service and certain insurer PPOs.
What evidence do I need for a DMHC IMR request?
Bills, EOB, correspondence, and plan documents showing the disputed decision.
Can I file a complaint directly with DMHC without contacting my health plan first?
No, file a grievance with your health plan first; escalate after 30 days or if you disagree.
What about surprise or out-of-network bills?
These fall under health plan disputes; follow the grievance process and escalate to DMHC or CDI as applicable.
Are there timelines for hospital financial aid applications?
Contact the hospital directly for its policy.
Next steps: Identify your plan's regulator, file a grievance with evidence, and escalate if needed within 30 days.