How the Medical Board of California handles complaints against physicians

Who regulates California physicians?

The Medical Board of California (MBC) is a consumer-protection agency within the Department of Consumer Affairs that licenses and disciplines the state’s roughly 150,000 physicians and surgeons (M.D.s). Its authority comes from the Medical Practice Act, found in the California Business and Professions Code (BPC), sections 2000–2448. The Board’s job is not to resolve billing disputes or award compensation — it is to decide whether a physician has violated the Medical Practice Act.

Note the limits of its reach: the MBC does not regulate osteopathic physicians (DOs, who answer to the Osteopathic Medical Board of California), chiropractors, dentists, nurses or optometrists, and it has no authority over bedside manner, office staff, or fees unless the conduct affects the safe delivery of care.

Where complaints come from

Anyone can file a complaint — a patient, a family member, a colleague, a hospital or an insurer — and complaints can be filed anonymously through the Board’s BreEZe system. Many cases, though, arrive as mandated reports rather than patient complaints:

• malpractice settlements or judgments above $30,000 (BPC §801);
• hospital peer-review actions restricting privileges (BPC §805);
• coroner reports of a death involving possible gross negligence;
• criminal arrests and convictions, which you must self-report within 30 days (BPC §802.1); and
• referrals from other agencies.

The most common complaint type is quality of care — misdiagnosis, negligent treatment, surgical complications — followed by prescribing issues, sexual misconduct, impairment, and unprofessional conduct such as record alteration or fraud.

What the Central Complaint Unit does

Every complaint is first screened by the Board’s Central Complaint Unit (CCU). Its two questions are simple: is the matter within the Board’s jurisdiction, and does it allege a violation of the Medical Practice Act? Where it does, the CCU obtains the evidence it needs to decide whether to investigate:

• For a quality-of-care complaint, the CCU requests your certified medical records and a written summary, then refers the file to a medical consultant or expert reviewer to assess whether the standard of care was met.
• A minor violation may be resolved with a compliance letter or a citation and fine rather than formal charges.
• If no violation is found, or the evidence is insufficient, the case is closed (and retained for one or five years depending on its merit).
• Urgent matters — sexual misconduct, impairment — are referred for investigation immediately.

The 15-day records clock

When the Board requests records, the deadline is strict: you must produce certified copies within 15 calendar days. Missing it triggers a civil penalty of $1,000 per day, up to $10,000. The accompanying request for a written narrative of your care is your opportunity to explain your clinical reasoning — but everything you write can be used later, so it is worth having counsel review it before you respond.

When a complaint becomes an investigation

If a medical consultant or expert reviewer concludes that a violation may have occurred and more digging is needed, the matter is referred to the Department of Consumer Affairs’ Health Quality Investigation Unit (HQIU). At every stage the Board must ultimately meet a high bar — clear and convincing evidence — and you will receive a letter if your case is referred. Our companion guide explains how long a Medical Board of California investigation takes and what to expect.

How to respond — the first week matters

1. Don’t panic, and don’t ignore it. Calendar every deadline, starting with the 15-day records clock.
2. Get advice early. Retain a California medical license-defense attorney and notify your professional liability insurer — many policies include license-defense cover.
3. Produce complete, certified records — unaltered. Never amend an entry after a request.
4. Write your narrative carefully. Keep it factual, reflective and reviewed by counsel; it frames how the Board sees you.
5. Show insight and any remediation you have already undertaken — the beginnings of the mitigation record that matters if the case proceeds to discipline.

This article is general information for education purposes and is not legal advice. If you have received a complaint, a records request or an Accusation, seek advice from a California attorney experienced in medical license defense and notify your professional liability insurer. Healthcare Ethics Courses is an independent education provider and is not affiliated with, endorsed by, or acting on behalf of the Medical Board of California, the Department of Consumer Affairs, or any state agency; names are used for reference only.