Dennis A. Wichern

  • Former Federal Agents
  • 100 Years of Combined Experience
  • Investigations, Compliance & Defense
Chris Quick

Former Special
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Roger Bach

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Agent (DOJ-OIG & DEA)

Timothy Allen

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Ray Yuen

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Agent (FBI)

Michael S. Koslow

Former Special
Agent (DOD & OIG)

Dennis A. Wichern

Former Special Agent-in-Charge (DEA)

DEA, Chicago Field Office
DEA Compliance
Phone: (866) 352-9324

Overview and Educational Background

Mr. Wichern is the former Special Agent-in-Charge of the Chicago, Illinois regional office of the U.S. Drug Enforcement Administration (DEA).  Mr. Wichern offers clients over three decades of federal law enforcement experience as well as a keen understanding federal agencies and working relationships with all major federal agencies, the U.S. Sentencing Commission, Assistant U.S. Attorneys, U.S. Attorneys, and other Department of Justice officials.  He is a Certified Public Accountant (CPA) and holds a Master of Arts in Business and Finance from Webster University, Webster Groves, Missouri.  He also has a B.S. from Southeast Missouri State University at Cape Girardeau, Missouri.

Experience in the DEA

Until recently, Special Agent Wichern headed the DEA’s Chicago office.  He supervised almost 600 agents, special agents, diversion investigators, attorneys, and staff employees of the DEA.  In that capacity, Mr. Wichern was the top federal DEA agent for one of the central regional offices and had full responsibility for all civil and criminal operations and investigations in Illinois, Indiana, Wisconsin, Missouri, and North Dakota.  Before that, Mr. Wichern served in the following roles:

  • Assistant to the Deputy Administrator (the second-in-command of the U.S. Drug Enforcement Administration worldwide operations) at the DEA Headquarters in Arlington, Virginia;
  • Assistant Special Agent-in-Charge in Indiana; Section Chief in Virginia;
  • Group Supervisor in Missouri;
  • DEA Special Agent in Missouri (earlier in his career)
Experience in Healthcare and Pharmacy Consulting

Mr. Wichern’s consulting services focus on (1) establishing effective compliance programs for healthcare business owners, physicians, and pharmacies in drug diversion, risk mitigation, opioid prescriptions, overdose prevention, and drug and chemical investigations and (2) assisting those medical providers and pharmacies under audit by commercial insurance carriers, the Office of Inspector General (OIG), the FBI, the DEA, the Medicaid Fraud Control Unit (MFCU), the Attorney General’s Office, or the Department of Justice for alleged fraud or violations of the Controlled Substances Act (“opioid indictments”).

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