Nicholas B. Johnson
Former Prosecutor
Lynette Byrd
Former Assistant
U.S. Attorney
John Sellers
Former DOJ
U.S. Attorney
Linda Julin McNamara
Former Assistant U.S. Attorney
Dr. Nick Oberheiden
Attorney & Founder
Does a Subpoena Have to Be Served in Person?
Last Updated: 09-05-2026 Being served with a subpoena immediately leaves you with lots of questions, and the subpoena itself provides very few answers. It also provides you with very little time to get your bearings and make the decisions you need to make in order to protect yourself. If you...
Read moreGeneral Services Administration (GSA) Joins White House Task Force to Eliminate Fraud
Last Updated: 06-23-2026 The U.S. General Services Administration (GSA) has joined the White House Task Force to Eliminate Fraud, which is chaired by Vice President J.D. Vance. As a member of the Task Force, the GSA will focus specifically on using its data and resources to expose fraud, waste, and...
Read moreU.S. Treasury Announces New Whistleblower Initiative Targeting Fraud Under Government Healthcare Programs
On March 30, 2026, the U.S. Treasury Department announced a new whistleblower initiative focused specifically on targeting fraud under Medicare, Medicaid, and other government healthcare programs. While the U.S. Treasury’s new initiative was spurred by the ongoing investigations in Minnesota, it is accepting whistleblower complaints from individuals nationwide. The U.S....
Read moreDEA “Operation Meltdown” Targets Illegal Online Pharmacies
The U.S. Drug Enforcement Administration (DEA) recently announced a crackdown on online pharmacies selling diverted and counterfeit medications. According to the DEA’s press release, the crackdown began when the DEA’s Rocky Mountain Field Division launched an investigation in 2022, and it has subsequently spread across the United States and around...
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New DOJ-HHS False Claims Act Working Group to Target Healthcare Providers in Key Areas
On July 2, 2025, the U.S. Department of Health and Human Services (HHS) announced that it is partnering with the U.S. Department of Justice (DOJ) to form a new working group focused on targeting fraud within the healthcare sector. The new DOJ-HHS False Claims Act Working Group (the “Working Group”)...
Read moreAssisted Living Fraud Defense
Experienced Defense Counsel for Individuals and Assisted Living Facilities Accused of Fraud Oberheiden P.C. is a criminal defense law firm that represents assisted living facilities and associated individuals in state and federal law enforcement matters. If the U.S. Department of Justice (DOJ), U.S. Department of Health and Human Services’ Office...
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What Happens When You Receive an ADR from a CMS Auditor?
If you have received an additional documentation request (ADR) from your CMS auditor (i.e., a MAC, RAC, UPIC, or SMRC), you might be wondering what happens next. At this stage, the short answer is, “It’s up to you.” If you respond to the ADR letter and provide documentation to support...
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Florida Department of Health Investigations
Experienced Defense Counsel for Health Care Professionals Facing Florida Department of Health Investigations Facing an investigation from the Florida Department of Health presents substantial risks. These Florida Department of Health investigations can target a wide range of allegations—and, depending on the allegations you are facing, your professional license could be...
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DOJ Targets Medicare Fraud Involving Ambulance and Ambulette Transportation Services
The U.S. Department of Justice (DOJ) has recently pursued multiple cases involving allegations of Medicare fraud against the owners of ambulance and ambulette companies. The U.S. Department of Health and Human Services Office of Inspector General (HHS-OIG) has pursued similar cases in recent years as well. As a result, it...
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Defense Lawyers for Cardiologists Accused of Medicare Fraud Involving Sestamibi and Tetrofosmin
Our Lawyers Are Available to Represent Cardiologists Accused of Overbilling Novitas Solutions, Inc. Two cardiologists in New Jersey have filed a massive qui tam lawsuit under the False Claims Act accusing more than a thousand other cardiologists of improperly billing Novitas Solutions, Inc. ("Novitas") for sestamibi and tetrofosmin. The U.S....
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