Missouri Federal Criminal Defense Attorneys - Oberheiden, P.C.
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Missouri Federal Criminal Defense Attorneys

Federal Criminal Defense Attorneys Tenaciously Defending the Rights of the Accused in St. Louis, Springfield, and all of Missouri

St. Louis address – by appointment only:
4818 Washington Blvd.
St. Louis, MO 63108

Many people in Missouri hire Oberheiden, P.C. when they are the target of a U.S Department of Justice, the FBI, the DEA, the OIG, a qui tam “whistleblower” lawsuit, or an Internal Revenue Services (IRS) audit. Clients in St. Louis, Jefferson City, Kansas City, Hannibal, Cape Girardeau, Joplin, Saint Joseph, Springfield, and surrounding community know they can count on our extensive experience and our track record. Oberheiden, P.C. is a federal criminal defense firm.

  • 2,000 Federal Criminal Cases Handled
  • An Entire Team of Former Federal Prosecutors Helping You
  • We Avoided Charges, Dismissed Charges, Obtained Trial Acquittals

Although no one welcomes the need to fight allegations of illegal activity, the task of taking on powerful federal law enforcement agencies and skilled federal prosecutors is particularly intimidating. An array of challenges awaits efforts to avoid the massive federal fines/penalties, incarceration, and other consequences associated with a conviction of federal criminal charges. The aspects of criminal prosecutions in the federal court system that raise the specter of steeper sentences and a higher risk of conviction have been magnified by recent changes in the policies of the DOJ and other federal agencies.

The Missouri federal criminal defense attorneys at Oberheiden, P.C. have been defending the rights of the criminally accused and taking on the federal government for decades. While our law firm has obtained wide recognition for representing healthcare professionals and medical industry businesses, we have defended against every federal law enforcement agency. Our firm employs several lawyers who had distinguished careers as prosecutors with the U.S. Attorney’s Office and the DOJ. Individuals across the nation from all walks seek to retain our law firm.

Put our highly experienced team on your side

Dr. Nick Oberheiden
Dr. Nick Oberheiden



Lynette S. Byrd
Lynette S. Byrd

Former DOJ Trial Attorney


Brian J. Kuester
Brian J. Kuester

Former U.S. Attorney

Amanda Marshall
Amanda Marshall

Former U.S. Attorney

Local Counsel

Joe Brown
Joe Brown

Former U.S. Attorney

Local Counsel

John W. Sellers
John W. Sellers

Former Senior DOJ Trial Attorney

Linda Julin McNamara
Linda Julin McNamara

Federal Appeals Attorney

Aaron L. Wiley
Aaron L. Wiley

Former DOJ attorney

Local Counsel

Roger Bach
Roger Bach

Former Special Agent (DOJ)

Chris Quick
Chris J. Quick

Former Special Agent (FBI & IRS-CI)

Michael S. Koslow
Michael S. Koslow

Former Supervisory Special Agent (DOD-OIG)

Ray Yuen
Ray Yuen

Former Supervisory Special Agent (FBI)

Unparalleled Experience & Insider Knowledge of Federal Agencies

When you are fighting for your future against the federal government, experience constitutes the most precious litigation resource. Oberheiden, P.C. offers extensive experience in federal cases.

Nick Oberheiden: As the founding partner of Oberheiden, P.C., Nick has acquired a national reputation as a leading authority in the areas of federal litigation, criminal procedures, and white-collar and healthcare law. He has worked extensively defending cases involving a wide range of crimes, such as:

Missouri Federal Criminal Defense AttorneysOur law firm was developed with a focus on defending parties that have drawn the attention of federal law enforcement. We are staffed with several former lawyers with agencies like the DOJ and the U.S. Attorney’s Office. Our lawyers have over seventy years of collective experience within the Department of Justice. Because our lawyers have worked closely with federal law enforcement agencies like the Federal Bureau of Investigation (FBI), Drug Enforcement Agency (DEA), and other federal law enforcement, our approach to defending clients is proactive rather than reactive. We anticipate the tactics of federal agents, which allow us to effectively defend the rights of our clients while building the best defense.

Exceptional Success Representing Providers of Healthcare and Medical Services and Products

Our Missouri federal criminal defense lawyers handle the full spectrum of crimes in federal court. We have a national reputation for defending allegations of engaging in healthcare fraud. We understand that most physicians, pharmacy owners, and other healthcare professionals do not anticipate receiving a federal grand jury subpoena or a target letter. Nonetheless, federal authorities have concentrated their efforts on white-collar offenses and other financial crimes that affect public funds in recent years. If you are being investigated by the federal government for healthcare fraud, you face exposure to severe penalties that include:

  • Imprisonment in a federal penitentiary
  • Lasting damage to your reputation
  • Suspension or loss of your professional license
  • Criminal record
  • Obligation of repayment
  • Fines, penalties, and costs of litigation
  • Loss of ability to participate in Medicare/Medicaid

Our experienced federal trial attorneys serving Missouri have vast experience handling all types of cases against individuals and companies in the healthcare industry. Our legal expertise and seasoning representing healthcare professionals have empowered us to diagnose weaknesses in the prosecutor’s case and improper procedures by law enforcement. We have a thorough knowledge of the statutory elements of healthcare offenses, affirmative defenses, safe harbor provisions, and procedural issues that can be used creatively and effectively to avoid civil or criminal liability.

Enhanced law enforcement tools aimed at investigating and prosecuting fraud increases the probability that healthcare providers will face a civil qui tam action or criminal charges. For example, Medicare Fraud Strike Force Teams utilize the combined manpower and resources of local, state, and federal law enforcement and data analytics. These specialized law enforcement units combine investigative intelligence with data analytics. This information might lead to the OIG referring credible allegations of healthcare fraud to the Centers for Medicare & Medicaid Services (CMS). CMS will then suspend payments to the target.

Our law firm represents doctors, urgent care treatment centers, long-term care facilities, compound pharmacies, mental health facilities, home healthcare agencies, drug treatment facilities, and others accused under the many federal laws aimed at preventing financial abuse and conflicts of interest. Our law firm defends against the full spectrum of improper conduct by individuals and businesses in the medical services and products sector, such as:

  • Medicare/Medicaid fraud
  • Upcoding & unbundling
  • Billing for phantom services
  • Fraudulently certifying patients as home bound
  • Improper prescriptions of medications like opioids
  • Granting waivers of deductibles and co-pays
  • Overutilization of medical services
  • Buy-back of prescription medications
  • Prescriptions not intended to be filled
  • Bribes for referrals of Medicare/Medicaid patients or services
  • Physician conflicts of interest
  • Lack of medical necessity
  • Fraudulent reporting of medical procedures
  • Illegal prescription/distribution of medications

Healthcare providers and suppliers trust us to take on the federal government in cases involving healthcare fraud because less than two percent of our clients facing federal grand jury investigations, OIG subpoenas, or a target letter since 2012 were referred for prosecution. Although many clients seek us out because of our success at trial, we also have obtained overwhelming results in Medicare & Medicaid audits. Our lawyers have successfully shielded our clients facing RAC, ZPIC, and Medicaid audits from referral to the United States Attorney’s Office.

Our team of more than a dozen attorneys brings exhaustive experience with federal regulatory agencies that conduct investigations and prosecutions. This background allows us to have unique insight into weaknesses in federal prosecutor cases, common federal law enforcement mistakes, subtle aspects of statutory safe harbor provisions, and other factors essential to an effective defense in healthcare fraud cases. Since our lawyers have investigated similar cases in the past as former prosecutors, we understand where to concentrate our attention when scrutinizing and attacking forensic tests, law enforcement procedures, search and seizures, and the questioning of our clients. This background litigating many cases involving civil or criminal liability in federal court has equipped our Missouri federal defense attorneys with the capacity to dissect the prosecutor’s case to pursue the best possible outcome for our clients.

Why Individuals and Corporations Under a Cloud of Suspicion Trust Oberheiden, P.C.

Oberheiden, P.C. brings many special traits and a unique background often referenced by clients that seek us out after they learn they must take on powerful federal authorities. Some of the key factors that lead clients to choose us include:

Proven Success in Criminal Cases: While many law firms laud their success and experience in federal court, we can site hard data demonstrating our preeminence. We have successfully represented clients in federal criminal cases across two thirds of all U.S. states, including Missouri. Our clients know we do not shy away from trial because we have represented clients in many criminal trials. We have repeatedly convinced prosecutors not to move forward or to dismiss returned grand jury indictments.

Thorough Knowledge of Federal Court: We have effectively represented clients in internal investigations, audits, federal investigations, and against federal indictments. Our attorneys have defended hundreds of clients who have received grand jury subpoenas and handled more than 2,000 federal criminal cases. Nick Oberheiden regularly appears on Missouri media stations because of his reputation as a federal lawyer. He also is the author of widely published books and articles regarding these issues.

Protecting Professional Licenses & Careers: Not one of our clients subject to a provider audit has been referred to the U.S. Attorney’s Office for prosecution. Each of our clients facing such an audit also kept their professional license.

Our seasoning, legal acumen, and extensive litigation resources have equipped our firm to handle the broad scope of federal crimes, such as:

FAQs Regarding Defense Against Federal Crimes and Civil Penalties in Missouri

What should I do if the FBI shows up at my house?


If the FBI or any other federal agents show up at your home or business, do not speak to them about their investigation. You have a right to consult with an attorney before talking to law enforcement. However, FBI agents frequently approach suspects, casually asking for seemingly harmless information. This is often a ploy to get the suspect to let their guard down in hopes they may an incriminating statement or consent to a search. Don’t fall for these tactics. Instead, contact an experienced Missouri federal criminal defense attorney to discuss the situation. An attorney can communicate on your behalf with law enforcement and help guide your future actions to reduce the chances you become the subject of a federal criminal investigation.

What is a target letter?


Federal prosecutors send target letters to a person they intend on filing criminal charges against. A target letter may only announce the government’s position that you are under investigation, but it can also contain a demand that you appear and testify before a grand jury. It is important to carefully read a target letter to fully understand what is at stake and where prosecutors are in their investigation. If you are required to testify at a grand jury proceeding, you are not entitled to have a lawyer present, making it even more important you consult with a lawyer before responding. An experienced Missouri federal criminal defense attorney can help you make sense of a target letter and work with you to develop an effective strategy.

What is a grand jury?


When federal prosecutors believe that someone committed a crime, they cannot charge that person until they present the case to a grand jury. A grand jury is a group of ordinary citizens who listen to the prosecution’s case. If the grand jury determines that there is probable cause to believe the target of the investigation committed the crimes in question, the grand jury will return a “true bill.” This allows the prosecution to file formal charges against the target, who will then become a defendant. If you face criminal charges in federal court, it is essential you contact an experienced Missouri federal criminal defense attorney as soon as possible.

What is a grand jury subpoena?


Despite its name, a grand jury subpoena is not issued by a grand jury but by the U.S. Attorney’s Office or another federal agency. Grand jury subpoenas are investigative tools the government uses before it files charges against a defendant. If you received a grand jury subpoena, it’s too early to tell whether or not you are the focus of the federal government’s investigation. It is important to respond carefully to the government’s request. While you may be able to challenge the subpoena with the help from a Missouri federal criminal defense attorney, ignoring the subpoena is not a good option as it can lead the court to find you in contempt. Contact an experienced Missouri federal criminal defense lawyer today if you have questions about a grand jury subpoena, what it means, and what options you have.

Should I try to clear things up by talking to federal investigators if I have not done anything wrong?


State and federal prisons are overflowing with people that relied on this strategy. Even if you think you have not committed a criminal offense, you might have engaged in conduct or an arrangement that could expose you to civil or criminal liability. Further, misrepresentations to a federal investigator could subject you to criminal liability independent of the underlying charge. The best practice is never to speak with law enforcement officers or federal agents without an experienced and skilled Missouri federal criminal defense lawyer present to protect your rights.

What is at stake in a federal prosecution?


A conviction for a federal crime can carry overwhelming consequences. Incarceration, fines, probation, and professional sanctions are all possible punishments. However, the federal sentencing rules are extremely complex and both federal judges and prosecutors lack the discretion that most of their state counterparts enjoy. Remember, just because you were charged with a federal crime does not mean you are guilty. You are indeed presumed innocent unless and until the government can prove you guilty beyond a reasonable doubt. If you are facing serious federal charges, it is in your best interest to contact a Missouri federal criminal defense attorney to have them review your case and provide you with their thoughts. From there, you can work together to determine your best course of action.

Our Leading Federal Criminal Defense Law Firm Will Fight Aggressively for You

Whether you are the subject of a returned federal indictment or merely an ongoing investigation, our lawyers tenaciously fight for the rights of the criminally accused in pursuit of the best possible outcome for our clients. At Oberheiden, P.C., we have experienced Missouri federal criminal defense lawyers. Call us at 888-680-1745 or request a free case evaluation online now to discuss your options.

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Why Clients Trust Oberheiden P.C.

  • 95% Success Rate
  • 2,000+ Cases Won
  • Available Nights & Weekends
  • Experienced Trial Attorneys
  • Former Department of Justice Trial Attorneys
  • Former Federal Prosecutors, U.S. Attorney’s Office
  • Former Agents from FBI, OIG, DEA
  • Cases Handled in 48 States
Email Us 888-680-1745