A Jacksonville, Illinois, chiropractor has been sentenced to federal prison after prosecutors said he defrauded health insurance companies through more than 2,000 false claims.
Sean Rondeau, 56, was sentenced to one year and one day in prison, followed by three years of supervised release, according to the U.S. Attorney’s Office for the Central District of Illinois.
Rondeau was convicted of healthcare fraud, three counts of mail fraud, and five counts of wire fraud. The judge also ordered him to pay more than $268,000 in restitution.
Prosecutors said Rondeau submitted more than 2,000 fraudulent claims, then tried to use client relationships to cover up what he had done after he learned he was under investigation.
Prosecutors Said The Claims Were Repeated Choices
At sentencing, the government said each fraudulent submission required Rondeau’s direct action. Prosecutors argued the claims were not a billing error or a one-time mistake, but repeated false submissions made over time.
The Journal-Courier reported that Rondeau had chiropractic offices in Jacksonville and White Hall. The outlet said the indictment accused him of submitting claims for supplies and services that never happened or never existed.
The indictment also said patients were asked to sign blank treatment forms, according to the Journal-Courier. Prosecutors said Rondeau later convinced some clients to sign false documents after he knew the claims were being investigated.
The Judge Pointed To A Prior Fraud History
U.S. District Judge Colleen R. Lawless noted during sentencing that Rondeau committed the crimes after previously being caught committing fraud more than a decade earlier, according to the Justice Department.
The judge also found that Rondeau continued submitting false claims even after he knew he was under investigation in the current case.
A federal grand jury returned a superseding indictment against Rondeau in August 2024. He pleaded guilty to all nine counts in December 2025.
The FBI Investigated The Case
The FBI’s Springfield Field Office investigated the case. Assistant U.S. Attorney Douglas F. McMeyer represented the government.
The sentence includes one year and one day in federal prison, three years of supervised release, and more than $268,000 in restitution. The extra day makes the sentence longer than a symbolic short jail term and places Rondeau in federal custody after a guilty plea to all nine counts.
The Justice Department said the convictions included healthcare fraud, mail fraud, and wire fraud. The restitution order reflects the financial damage prosecutors tied to the fraudulent billing scheme.