John’s practice focuses on defending: law enforcement officers and correctional service providers against charges of constitutional rights violations, business owners against claims of negligence involving personal injury and property damage, and healthcare professionals in cases alleging medical malpractice.

A Springfield native, John joined Heyl Royster after seven years of public service – first as an Assistant Attorney General for the State of Missouri, and then as a Special Agent with the United States Drug Enforcement Administration. While serving with the Missouri Attorney General's Office, John represented state employees and entities at both the trial and appellate levels, with an emphasis on federal civil rights litigation and habeas corpus proceedings.