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    • Zachary Margulis-Ohnuma
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    • Shane Finn
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Tess Cohen

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Tess Cohen is a criminal defense and civil rights attorney in New York City and of counsel to ZMO Law PLLC. Her practice focuses on defending complex fraud and narcotics cases, including health care fraud, mail fraud, wire fraud and narcotics conspiracies. She also handles wrongful convictions, and a variety of other criminal and civil matters in state and federal court.

Criminal Defense Attorney

Prior to joining ZMO Law PLLC, Ms. Cohen spent more than eight years as an assistant district attorney with the New York County District Attorney’s Office, where she was assigned to the Office of the Special Narcotics Prosecutor. Most recently, she served as the chief of the Prescription Drug Investigation Unit where she oversaw all the office’s work on prescription-drug related crimes, particularly investigations and prosecutions of medical practitioners selling prescriptions for controlled substances and the diversion of opioids from pharmacies and hospitals.

Ms. Cohen was lead prosecutor for numerous complex cases, including a thirteen-defendant oxycodone prescription and medicaid fraud conspiracy that involved allegations of more than $25 million worth of Medicaid fraud. She also handled the prosecution of a doctor who was charged with manslaughter due to the overdose death of two of his patients. She supervised prosecutors and analysts handling a wide array of prescription drug and health care fraud related cases. She has worked directly with a variety of state and federal law enforcement and regulatory agencies, including the NYS Office of Professional Medical Conduct, NYS Department of Education, NYS Bureau of Narcotics Enforcement, Office of Inspector General for Health + Hospitals, Office of the Medicaid Inspector General, NYC Human Resource’s Administration, the NYS Attorney General’s Office, New York State Insurance Fund, U.S. Department of Health and Human Services, as well as the DEA and NYPD.

As a result of her time as a prosecutor, Ms. Cohen has experience with investigative techniques used by law enforcement including wiretaps, confidential informants, and data analysis. She has conducted numerous hearings and trials, as well as complex motion practice and more than 100 grand jury presentations. She has worked extensively with individuals suffering from substance use disorder and their families. She is knowledgeable about drug treatment options offered throughout the state court system.

For her work, Ms. Cohen received the True American Hero Award from the Federal Drug Agents Foundation in 2019.  She has conducted numerous trainings related to investigating prescription drug crimes and health care fraud, including delivering a CLE on Prescription Drug Investigations at the New York Prosecutors’ Training Institute in July 2020.

Ms. Cohen graduated from Columbia Law School, where she was the recipient of the Lowenstein Fellowship given to a small number of graduates each year who are dedicated to working in public interest law. She also received the Jane Marks Murphy Prize for excellence in clinical advocacy. She has worked with principal attorney Zachary Margulis-Ohnuma in a variety of professional settings for more than a decade. As a law student intern in 2010, she uncovered crucial evidence that helped lead to the exoneration of Antonio Yarbough four years later.

She is also active in criminal justice policy work at the New York City Bar Association. She is the chair of the City Bar’s Criminal Justice Operations Committee and a member of the Mass Incarceration Task Force. She was a fellow in the 2018 Women in Power program at the 92nd Street Y. Ms. Cohen’s experience as a prosecutor combined with her demonstrated devotion to the rights of those accused of crimes and sensitivity to the injustices in our criminal justice system make her an ideal complement to our team of client-focused, trial-ready criminal defense lawyers.

ZMO Law PLLC Attorneys
  • Zachary Margulis-Ohnuma
  • Tess Cohen
  • Shane Finn
Contact ZMO Law
Latest Blogs By Tess Cohen
  • Governor Hochul vetoed bills aimed to curb police misconduct and overturn wrongful convictions
  • New Yorkers Get a Second Chance with the Clean Slate Act
  • The Power of a Defense Expert

ZMO Law In the News

December 3, 2025
Buffalo News: Judge dismisses charges against ZMO Law client in 1993 Tonawanda murder
In court just last week, Erie County prosecutors asked a judge to reinstate James Pugh’s convictions for a 1993 City of Tonawanda homicide. As Pugh’s retrial was about to begin, the District Attorney’s Office asked for the opposite – that the charges be dropped. On Tuesday, the judge said yes to the latter. State Supreme ...
December 3, 2025
New York Times: Prosecutors drop murder case against ZMO Law client who served more than 26 years
James Pugh, one of two men originally convicted in the savage killing of Deborah Meindl near Buffalo in 1993, said all along that he was innocent. Mr. Pugh, 63, was convicted in 1994 of the savage murder of Deborah Meindl, a woman with two young children who was discovered stabbed and strangled in her home ...
September 22, 2025
Scott Lorenz is back on trial for a 1993 murder. ZMO tells the New York Times he’s innocent.
Thirty-two years later, the Erie County District Attorney’s Office is re-trying Scott Lorenz for the horrible murder of Deborah Meindl in Tonawanda New York. Lorenz and ZMO Law client James Pugh had been convicted of that crime in a rigged trial in 1994, but the conviction was overturned two years ago based on withheld exculpatory ...
July 29, 2025
ZMO Law’s Tess Cohen quoted on bizarre plea deal for Ghislaine Maxwell
“Tess Cohen, who spent eight years in Manhattan’s Special Narcotics Prosecutor’s Office,was aghast that the immunity deal didn’t just protect Epstein — but even his unnamed associates whom victims have asserted joined in on the sexual abuse. ‘It is unconscionable to protect unnamed people not known to the government from prosecution for serious crimes, especially ...
June 18, 2025
The Nation: ZMO client Shujun Wang is a “bad example” of Chinese transnational repression
In a fascinating critical analysis of the Shujun Wang trial and the media coverage of it, the storied liberal newsweekly The Nation took on 60 Minutes, the FBI, and the federal prosecutors who pursued ZMO client Shujun Wang for the better part of a decade. “Prosecutors likened Wang’s work to that of a John LeCarré ...

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Phone: (212) 685-0999

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