Medical Malpractice Lawsuit New York Filing Rules and Deadlines

1. Check the Filing Deadline before Building the Case

The filing clock does not generally begin when a patient discovers the injury. CPLR § 214-a ordinarily measures the period from the alleged act or omission. Continuous treatment and limited exceptions can change that calculation.

Start with the General Limitations Rule

Most actions must begin within two years and six months of the alleged act or omission.
Continuous treatment for the same condition can affect when the period begins.
Foreign-object and qualifying cancer-diagnosis claims have separate discovery-based provisions.

Check Tolling and Public-Defendant Rules

CPLR § 208 tolls for infancy and insanity, subject to a 10-year limit for malpractice actions.
If a public-corporation claim requires notice, GML § 50-e generally requires service within 90 days after the claim arises.
A court may allow late service under statutory conditions; missing 90 days does not automatically end every claim.

These deadlines should be checked before the civil complaint filing process begins.

2. Complete the Certificate of Merit Requirement

Diagram: Decision tree showing the standard certificate process and timing paths involving consultation limits or delayed treatment records.

For an attorney-represented plaintiff, CPLR § 3012-a generally requires the complaint to be accompanied by the attorney’s certificate of merit. The physician does not sign it; the attorney makes the statutory declaration after the required review and consultation.

What the Attorney Certifies

The attorney reviews the facts and consults a physician licensed in any state who is reasonably believed knowledgeable about the issues.
The review and consultation must support a reasonable basis to commence the action.
Only one certificate is required for the action, even when multiple defendants are named or later added.

Know the Timing Exceptions

If limitations prevent timely consultation, § 3012-a provides a procedure for completing the certificate afterward.
If requested treatment records are not produced, the certificate may be served within 90 days after production.
Separate provisions address unsuccessful good-faith consultation efforts and claims relying solely on res ipsa loquitur.

3. Choose Venue and Complete the Malpractice Filing

Treatment location does not automatically control venue. The applicable CPLR rules and a separate post-joinder malpractice filing requirement both matter.

Choose the County under the CPLR

Review party residence and where a substantial part of the events or omissions occurred.
Apply special venue rules when another statute controls.
Improper venue may lead to a change of trial location rather than automatically ending the action.

File the Medical Malpractice Notice

CPLR § 3406 generally requires the prescribed malpractice notice no more than 60 days after issue is joined.
The filing includes proof that the notice was served on the other parties.
When demanded, proof concerning authorizations for relevant medical records also accompanies the filing.

These steps fit within broader civil litigation.

4. Build the Medical Record through Disclosure

After pleadings, records, testimony, and expert evidence take focus. CPLR § 3101 requires disclosure of material and necessary information, subject to privilege and other protections.

Develop the Factual Record

Obtain relevant treatment records and material evidence through appropriate disclosure.
Use depositions and document requests to examine treatment decisions and claimed injuries.
Follow court schedules rather than assuming every request has the same deadline.

Prepare Expert Disclosure

Expert disclosure addresses expected opinions, qualifications, subject matter, and grounds.
In a medical malpractice action, a party responding to an expert request may omit the medical expert’s name.
Expert proof should address departure from accepted practice and causation when disputed.

5. Move from Disclosure Toward Trial

After disclosure, expert proof may shape summary judgment and trial preparation. CPLR § 3406 also provides pre-calendar procedures and disclosure scheduling for malpractice actions.

Prepare for Summary Judgment

CPLR § 3212 permits a summary judgment motion after issue is joined.
Without a court-set deadline, the motion generally must be made within 120 days after the note of issue.
A later motion requires leave and good cause; a material factual dispute may require trial.

Document the Claimed Damages

Medical evidence should connect the alleged departure from accepted practice to the claimed injury.
Economic losses require evidence of their amount and relationship to the injury.
There is no general statutory cap on noneconomic damages in medical malpractice actions.

Related recovery issues may arise in a civil action for damages.

6. Frequently Asked Questions

Can I file a medical malpractice case without a lawyer?

CPLR § 3012-a states that its certificate requirement does not apply to a plaintiff who is not represented by an attorney. Other pleading, proof, deadline, and procedural requirements still apply.

Does every hospital malpractice claim require a 90-day notice of claim?

No. The 90-day rule applies when law requires a notice of claim as a condition precedent to an action involving a qualifying public corporation or related defendant. A private hospital claim is not subject to GML § 50-e merely because the defendant is a hospital.

Is a separate certificate of merit required for every doctor or hospital?

No. CPLR § 3012-a provides for a single certificate for the action even when more than one defendant is named or later added.

What if treatment records needed for expert review arrive late?

If requested treatment records from defendants have not been produced, CPLR § 3012-a provides a timing rule that can postpone service of the certificate until 90 days after those records are produced.

7. Review Filing Requirements with SJKP

A medical malpractice claim can involve several deadlines before the evidence is ever tested in court. SJKP’s attorneys can review the treatment timeline, potential defendants, expert-review requirements, and procedural posture to identify the rules that apply before filing. Contact SJKP to discuss the next procedural step.

29 Sep, 2026