The “Common Knowledge” Exception to the Expert Requirement in Medical Malpractice Actions under FTCA Categorized as “Substantive”

By Alex Stein

All expert requirements for medical malpractice actions (including merit certificates and affidavits) are categorized as “substantive” rather than “procedural” under both Erie (in diversity suits) and the Federal Tort Claims Act (FTCA). See here and here. The Fifth Circuit recently ruled in connection with a medical malpractice suit filed under FTCA that the “common knowledge” exception to the expert testimony requirement is “substantive” as well. Bush v. United States — F.3d —- 2015 WL 5472491 (5th Cir. 2015) (hereinafter: Bush). State law (Virginia law, in Bush) consequently trumps the federal law of evidence and procedure. Read More