How Our Doctors Help Draft and Sign Certificates and Affidavits of Merit

Affidavits in malpractice suits are legal linchpins—Expert Institute helps attorneys meet strict state rules with expert-reviewed, court-ready filings.

ByWendy Ketner, M.D.

Updated on

Medical team

The early stages of a medical malpractice lawsuit are critical—and the strength of an affidavit or certificate of merit often determines whether a claim proceeds or is dismissed. In many states, these documents are more than formalities; they are statutory gatekeepers designed to filter out unsubstantiated allegations. Attorneys must therefore secure the involvement of a qualified medical expert who can provide a competent, jurisdictionally compliant opinion under oath.

Yet identifying such an expert—who not only meets legal requirements but is also willing to sign a legally binding affidavit—can present a significant logistical and strategic challenge. This is where Expert Institute’s medical doctors provide meaningful support. Through a structured medical record review process that culminates in the preparation and signing of affidavits or certificates of merit, our team ensures that your filing is both substantively strong and procedurally sound.

The Critical Role of Affidavits in Malpractice Claims

In jurisdictions that require a certificate or affidavit of merit, the filing must confirm three core elements:

  1. A deviation from the accepted medical standard of care
  2. An injury caused by that deviation
  3. Expert opinion confirming the claim’s merit

Many states, such as Illinois, New Jersey, and Texas, require that this attestation be made by a physician who practices—or has practiced—in the same or a substantially similar field as the defendant. The affidavit or certificate must be detailed, timely, and signed under oath in a format prescribed by statute.

Failure to meet these procedural requirements can result in immediate dismissal, regardless of the strength of the underlying claim. Consequently, attorneys must work with medical experts who can both analyze complex records and clearly articulate their opinions in a manner that meets statutory thresholds.

How Our Doctors Conduct Medical Record Reviews

Expert Institute’s physicians begin with a thorough and methodical review of all relevant medical records, imaging, lab results, and provider notes. This analysis focuses on:

  • Establishing the standard of care for the provider’s specialty
  • Identifying any deviations from that standard
  • Determining causation, or how the alleged deviation led to the plaintiff’s injury
  • Assessing damages and their medical implications

Because our doctors specialize in a wide range of fields—from emergency medicine to orthopedics to oncology—we are able to match each case to a physician whose credentials satisfy the state-specific requirements for affiants. All experts are licensed, active, and have demonstrated experience providing legal analysis in their specialty areas.

Critically, our physicians understand the legal significance of these findings. They are trained not only to analyze clinical issues but also to frame their conclusions within the context of medical negligence law.

Drafting Jurisdictionally Compliant Affidavits and Certificates

Once our physician determines the case has merit, they will work closely with counsel to draft the affidavit or certificate of merit. This process includes:

  • Verifying the expert’s eligibility under state law
  • Detailing the basis of their opinion, including records reviewed and rationale for conclusions
  • Articulating the applicable standard of care
  • Describing how the defendant’s actions deviated from that standard
  • Explaining how the deviation caused harm to the plaintiff
  • Affirming their opinion under oath, when required

The end result is a customized, jurisdictionally valid affidavit or certificate that addresses statutory content requirements and withstands procedural scrutiny. In states like Nevada or Minnesota, where affidavits must be filed contemporaneously with the complaint, our expedited turnaround can also help attorneys meet aggressive filing deadlines.

Who Signs the Document?

Depending on the jurisdiction, the affidavit or certificate of merit may need to be signed by:

  • The expert medical witness (affidavit of merit)
  • The attorney, certifying that a qualified expert has been consulted (certificate of merit)
  • Both the attorney and expert, as seen in hybrid models like Illinois and Colorado

Our process ensures that when a physician’s signature is required, it is affixed with full awareness of its legal weight and compliance with all procedural mandates. Experts provide notarized signatures where required and are available to confirm their opinions at deposition or trial if the matter proceeds.

Benefits of Using Expert Institute’s Medical Professionals

Partnering with Expert Institute offers a number of key advantages for attorneys filing affidavits or certificates of merit:

  • Speed and Efficiency: Our streamlined workflow allows for rapid record review, often within days.
  • Credentialed Experts: All physicians meet relevant state licensing and specialty alignment requirements.
  • Litigation Awareness: Our doctors understand the evidentiary significance of their opinions and prepare affidavits accordingly.
  • Continuity of Support: Many experts who draft affidavits are also available to serve as testifying witnesses at trial.

These benefits ensure that the affidavit is more than a procedural hurdle—it becomes a substantive tool that frames the narrative of the case, strengthens early-stage litigation strategy, and signals to defense counsel and insurers that the claim is meritorious.

Avoiding Common Affidavit Pitfalls

Many early malpractice claims falter due to technical errors, such as:

  • Selecting an expert outside the defendant’s specialty
  • Filing an affidavit after the statutory deadline
  • Providing conclusory or vague assertions
  • Failing to establish a clear causal link between breach and injury

By using Expert Institute’s services, attorneys gain the benefit of early-stage vetting that goes beyond superficial review. Our experts ensure that each opinion meets evidentiary standards and is framed in language that aligns with both clinical and legal expectations.

Conclusion

Drafting and signing an affidavit or certificate of merit is a high-stakes task that demands both medical insight and legal precision. Through its expert medical record review process, Expert Institute delivers this dual competency—pairing attorneys with credentialed physicians who not only assess merit but also formally commit their opinions through compliant, well-reasoned affidavits.

Whether you’re litigating in a state with rigid affidavit statutes or preparing for potential motions to dismiss, our experts provide the clarity, credibility, and compliance necessary to move a case forward with confidence.

About the author

Wendy Ketner, M.D.

Wendy Ketner, M.D.

Dr. Wendy Ketner is a distinguished medical professional with a comprehensive background in surgery and medical research. Currently serving as the Senior Vice President of Medical Affairs at the Expert Institute, she plays a pivotal role in overseeing the organization's most important client relationships. Dr. Ketner's extensive surgical training was completed at Mount Sinai Beth Israel, where she gained hands-on experience in various general surgery procedures, including hernia repairs, cholecystectomies, appendectomies, mastectomies for breast cancer, breast reconstruction, surgical oncology, vascular surgery, and colorectal surgery. She also provided care in the surgical intensive care unit.

Her research interests have focused on post-mastectomy reconstruction and the surgical treatment of gastric cancer, including co-authoring a textbook chapter on the subject. Additionally, she has contributed to research on the percutaneous delivery of stem cells following myocardial infarction.

Dr. Ketner's educational background includes a Bachelor's degree from Yale University in Latin American Studies and a Doctor of Medicine (M.D.) from SUNY Downstate College of Medicine. Moreover, she is a member of the Board of Advisors for Opollo Technologies, a fintech healthcare AI company, contributing her medical expertise to enhance healthcare technology solutions. Her role at Expert Institute involves leveraging her medical knowledge to provide insights into legal cases, underscoring her unique blend of medical and legal acumen.

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