Sample Medical Malpractice Notice of Intent to Sue in California

A sample medical malpractice notice of intent to sue in California is a written letter, served on each healthcare provider you plan to name at least 90 days before filing suit, that identifies you, describes what the provider did wrong, and spells out your injuries and losses with specificity. California Code of Civil Procedure Section 364 governs the notice and sets no required form, but it does require particular content and a traceable method of delivery.¹

What the Notice Must Say

Section 364(b) requires three categories of information:¹

The legal basis of the claim: what the provider did wrong, such as a misdiagnosis, surgical error, medication mistake, or failure to treat a known condition.
The type of loss sustained: physical injuries, emotional harm, lost income, and medical expenses incurred as a result.
The nature of the injuries, with specificity. Generalities like “I was harmed” don’t meet the bar. If a surgical error caused nerve damage that limits your ability to work, say that.

The statute doesn’t explicitly demand your name, the provider’s name, or the date and place of treatment. A functional notice includes them anyway. A letter that doesn’t tell the recipient who you are, when the treatment happened, and where it occurred gives them nothing to investigate, and investigation is the whole point of the 90-day window.

How the Notice Is Typically Laid Out

The statute is deliberately flexible on format. In practice, a California notice of intent to sue is usually built from these blocks:

Header. Your name and contact information, or your attorney’s letterhead. The date. A title line such as “90-Day Notice of Intent to Sue Pursuant to CCP § 364.” A delivery line: “Via Certified Mail — Return Receipt Requested.”

Recipient block. The full name, title, and address of each provider and facility you intend to sue. For an institution, address the notice to its registered agent for service of process.

Opening paragraph. Identify yourself (or the injured patient if you are a representative), state that you were a patient of the recipient, and declare that the letter is formal notice under CCP Section 364 of your intent to file a complaint for professional negligence in California Superior Court. State that the lawsuit will be filed no sooner than 90 days from the letter’s date unless the matter is resolved beforehand.

Background facts. A chronological summary of the treatment. Dates of visits, procedures, and diagnoses. What the provider did or failed to do that fell below the standard of care.

Injuries and damages. The injuries described with specificity, as the statute requires. Physical harm, ongoing conditions or disability, emotional and psychological effects, and financial losses such as medical bills and lost wages. Itemized billing is not required at this stage, but the description should be concrete enough that the reader understands the scope of the claim.

Closing. An invitation to contact you or your attorney to discuss resolution before the 90-day period expires, and a statement that you intend to proceed with litigation if you do not hear back.

Who Has to Receive a Notice

Section 364 defines “health care provider” broadly. It reaches anyone licensed under Division 2 of the Business and Professions Code, including physicians, surgeons, nurses, dentists, psychologists, and chiropractors, and it reaches clinics, health dispensaries, and health facilities licensed under Division 2 of the Health and Safety Code.¹ If negligent care happened at a hospital, you may need separate notices to the individual provider and to the facility.

One boundary matters. The notice requirement doesn’t apply to defendants whose identity you don’t yet know. Fictitious “Doe” defendants named under CCP Section 474 can be added to the suit later without a prior 90-day notice.¹

How to Serve It and Prove Delivery

Section 364(c) allows service by any method prescribed in Chapter 5 of the Code of Civil Procedure, which governs service of papers generally.¹ Certified mail with return receipt requested is the standard choice because it creates a clean paper trail. When the signed green card comes back, you have proof of the exact delivery date, and the 90-day clock runs from the date the provider actually receives the notice, not the date you drop it in the mail.

Personal delivery and signature-required overnight carriers are also permitted.² Whichever you use, keep the delivery confirmation. If a provider later argues that no notice was sent or that the 90-day period hasn’t run, the receipt is your proof.

How the Notice Affects Your Filing Deadline

California’s statute of limitations for medical malpractice is the earlier of one year from the date you discovered (or reasonably should have discovered) the injury, or three years from the date the injury occurred. Fraud, intentional concealment, and a foreign object left in the body with no medical purpose are the narrow exceptions that can extend the outer three-year limit.³

The 90-day wait creates an obvious problem when your deadline is close. Section 364(d) fixes it: if you serve the notice within the last 90 days before the statute of limitations expires, the filing deadline is extended by 90 days from the date of service.¹ The California Supreme Court has treated this as a tolling of the limitations period, meaning the clock pauses rather than simply adding days.⁴

The safety valve only works if you serve the notice before the deadline runs. Once the statute of limitations has expired, no notice will revive the claim.

What Happens If You Skip the Notice

Failing to send the notice does not, on its own, end your case. CCP Section 365 states that noncompliance with the notice requirement does not invalidate court proceedings or affect the court’s jurisdiction to enter judgment. The real enforcement mechanism runs against attorneys: a lawyer who files a malpractice suit without first serving the required notice can face investigation and discipline by the State Bar of California.⁴

Skipping it is still a poor strategy. Defense counsel will raise the omission to challenge procedural diligence. More importantly, you lose the Section 364(d) tolling benefit and forfeit the 90-day settlement window in which many claims resolve without a lawsuit. Treat the notice as required even though a missed notice isn’t grounds for dismissal.

Federal Facilities Follow a Different Process

If the treatment happened at a VA hospital, a military medical center, or another federal facility, CCP Section 364 doesn’t apply. Federal law requires you to file an administrative claim under the Federal Tort Claims Act on Standard Form 95 before you can sue, and the timing rules are their own separate system.⁵ Confirm which set of rules applies before sending anything if any provider in your care was federal.

1
California Legislative Information. California Code CCP – Section 364
2
California Legislative Information. California Code of Civil Procedure – Notices, and Filing and Service of Papers
3
California Legislative Information. California Code CCP 340.5 – Action for Injury or Death Against Health Care Provider
4
California Supreme Court Resources. Russell v. Stanford University Hospital (1997) 15 Cal.4th 783
5
Office of the Law Revision Counsel. 28 USC 2675 – Disposition by Federal Agency as Prerequisite