Lake Charles, Louisiana - Former Calcasieu Parish District Attorney John DeRosier has died, according to an announcement from the current District Attorney's Office. DeRosier served as the parish's top prosecutor for 15 years and was a Vietnam War veteran and United States Marine.
The Calcasieu Parish District Attorney's Office released a statement confirming DeRosier's passing and highlighting his contributions to law enforcement and public safety during his tenure. The office described him as having led historic prosecutions and expanded resources for crime victims throughout his career.
DeRosier's military service included deployment to Vietnam as a Marine before transitioning to civilian life and eventually becoming district attorney. His law enforcement career spanned more than a decade and a half in Calcasieu Parish, where he implemented several programs aimed at improving community safety.
One of DeRosier's most significant legislative achievements was championing doctor shopping legislation early in his tenure. Doctor shopping refers to the practice of patients visiting multiple doctors to obtain prescription medications, particularly opioids, without disclosing previous prescriptions. This practice often leads to dangerous drug accumulation and potential overdoses.
The legislation DeRosier advocated for in Louisiana has since been adopted by other states across the country. The District Attorney's Office credits this initiative with saving lives by reducing opioid overdoses, though specific statistics were not provided in the announcement.
During his 15-year tenure, DeRosier focused on expanding victim services and resources. These efforts aimed to provide better support for crime victims throughout the legal process, though specific details about these programs were not disclosed in the statement.
The current District Attorney's Office expressed gratitude for DeRosier's service to Calcasieu Parish, Louisiana and the nation. Officials extended condolences to his family and loved ones following his death.
DeRosier's death represents the loss of a veteran law enforcement official who served during a time when the opioid crisis was beginning to emerge as a major public health concern. His early recognition of prescription drug abuse issues and legislative response helped establish policies that other states would later implement.
Visitation for DeRosier will take place from 5 to 8 p.m. on Friday and from 8 to 9:30 a.m. on Saturday at Johnson Funeral Home.
The funeral service is scheduled for 10 a.m. at Our Lady Queen of Heaven Church.
DeRosier was 78.