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Press Release

Two Doctors Convicted for Unnecessary Urinalysis Testing Scheme

For Immediate Release
Office of Public Affairs

A federal jury convicted two doctors today for their involvement in a scheme to commit health care fraud.

According to court documents and evidence presented at trial, Dr. William Lawrence Siefert, 69, of Dayton, Ohio, and Dr. Timothy Ehn, 50, of Union, Kentucky, orchestrated their health care fraud scheme through Northern Kentucky Center for Pain Relief, a pain clinic in Florence, Kentucky. Siefert, a medical doctor, was employed by the clinic, and Ehn, a chiropractor, was the clinic’s owner. Siefert and Ehn engaged in a scheme to bill Medicaid for millions of dollars in medically unnecessary urinalysis testing for their patients, which included urinalysis testing purportedly conducted on faulty machinery.

Siefert and Ehn were each convicted of health care fraud. Ehn was additionally convicted of conspiracy to commit health care fraud. Siefert and Ehn are both scheduled to be sentenced on Sept. 20. Siefert faces a maximum penalty of 10 years in prison. Ehn faces a maximum penalty of 10 years in prison on each of the health care fraud conspiracy and health care fraud counts. A federal district court judge will determine any sentence after considering the U.S. Sentencing Guidelines and other statutory factors.

Assistant Attorney General Kenneth A. Polite, Jr. of the Justice Department’s Criminal Division, U.S. Attorney Carlton S. Shier IV for the Eastern District of Kentucky, Assistant Director Luis Quesada of the FBI’s Criminal Investigative Division, DEA Administrator Anne Milgram, Special Agent in Charge Tamala E. Miles of the Department of Health and Human Services Office of Inspector General (HHS-OIG), and Kentucky Attorney General Daniel Cameron made the announcement. 

The FBI, DEA, HHS-OIG, and Kentucky Medicaid Fraud Control Unit investigated the case.

Trial Attorneys Dermot Lynch, Lindsey Carson, and Assistant Chief Lauren Kootman of the Criminal Division’s Fraud Section are prosecuting the case.

The Fraud Section leads the Appalachian Regional Prescription Opioid (ARPO) Strike Force. Since its inception in late 2018, ARPO has partnered with federal and state law enforcement agencies and U.S. Attorneys’ Offices throughout Alabama, Kentucky, Ohio, Virginia, Tennessee, and West Virginia to prosecute medical professionals and others involved in the illegal prescription and distribution of opioids. Over the past three years, ARPO has charged over 115 defendants collectively responsible for issuing prescriptions for over 115 million controlled substance pills. To date, more than 60 ARPO defendants have been convicted. More information can be found at

Updated March 30, 2023

Health Care Fraud
Press Release Number: 23-326