Pasar al contenido principal
U.S. flag

Un sitio oficial del Gobierno de Estados Unidos

Así es como usted puede verificarlo

Dot gov
Los sitios web oficiales usan .gov
Un sitio web .gov pertenece a una organización oficial del Gobierno de Estados Unidos.
Https

Los sitios web seguros .gov usan HTTPS
Un candado ( Candado Un candado cerrado ) o https:// significa que usted se conectó de forma segura a un sitio web .gov. Comparta información sensible sólo en sitios web oficiales y seguros.

  • Quiénes somos
    • Sobre la DEA
    • Mission
    • Nuestra historia
    • Divisiones Nacionales
      • Atlanta
        • Atlanta Leadership
        • Atlanta Contacts
      • Caribbean
        • Caribbean Leadership
        • Caribbean Contacts
      • Chicago
        • Chicago Leadership
        • Chicago Contacts
      • Dallas
        • Dallas Leadership
        • Dallas Contacts
      • Detroit
        • Detroit Leadership
        • Detroit Contacts
      • El Paso
        • El Paso Leadership
        • El Paso Contacts
      • Headquarters
      • Houston
        • Houston Leadership
        • Houston Contacts
      • Los Angeles
        • Los Angeles Leadership
        • Los Angeles Contacts
      • Louisville
        • Louisville Leadership
        • Louisville Contacts
      • Miami
        • Miami Leadership
        • Miami Contacts
      • New England
        • New England Leadership
        • New England Contacts
      • New Jersey
        • New Jersey Contacts
      • New Orleans
        • New Orleans Leadership
        • New Orleans Contacts
      • New York
        • New York Leadership
        • New York Contacts
      • Omaha
        • Omaha Leadership
        • Omaha Contacts
      • Philadelphia
        • Philadelphia Leadership
        • Philadelphia Contacts
      • Phoenix
        • Phoenix Leadership
        • Phoenix Contacts
      • Rocky Mountain
        • Rocky Mountain Contacts
      • San Diego
        • San Diego Leadership
        • San Diego Contacts
      • San Francisco
        • San Francisco Contacts
      • Seattle
        • Seattle Contacts
      • St. Louis
        • St. Louis Leadership
        • St. Louis Contacts
      • Washington, DC
        • Washington Leadership
        • Washington Contacts
    • DEA Museum
    • Oficinas extranjeras
      • Africa
      • Andean
      • Caribbean
      • Europe
      • Far East
      • Middle East
      • North and Central America
      • Southern Cone
    • Divisiones operativas
      • División de Aviación
      • División de Control de Desvíos
    • Wall of Honor
    • Contáctenos
      • Submit a Tip
      • Extortion Scam
      • Public Affairs
      • Social Media Directory
  • Lo que hacemos
    • Orden público
      • DEA Office of Training
        • Office of Training Programs
      • El Paso Intelligence Center (EPIC)
        • Leadership
        • Mission
        • Services
        • Contacts
      • Forensic Sciences
        • Computer Forensics Program
        • Environmental Management
        • Laboratories
      • Intelligence
      • Operations
        • Administrative Law Judges
        • DEA Asset Forfeiture
        • Domestic Cannabis Suppression / Eradication Program
        • HIDTA
        • OCDETF
        • State and Local Task Forces
    • Educación y prevención
      • DEA’s Family Summit
      • Operation Engage
      • Community Outreach
      • Red Ribbon
        • Kiki and the History of Red Ribbon Week
        • Red Ribbon Toolkit - Resources For Your Community
      • Just Think Twice
      • Campus Drug Prevention
      • Get Smart About Drugs
      • Operation Prevention
    • Información sobre las drogas
      • Drug Policy
      • Drug Scheduling
      • The Controlled Substances Act
    • News
      • Alerts
      • Press Releases
      • Most Wanted Fugitives
        • All Fugitives
      • Stories
      • Events
      • Speeches
      • Testimony
    • Campaigns
      • One Pill Can Kill
        • Partner Toolbox
        • Social Media Campaign
      • DEA National Prescription Drug Take Back Day
  • Carreras
    • Agentes especiales
      • Preguntas frecuentes de los agentes especiales
      • Anuncios de empleo para agentes especiales
    • Investigador de desvíos
      • Diversion Investigator Job Announcement
    • Especialista en investigación de inteligencia
      • Anuncios de trabajo de especialista en investigación de inteligencia
      • Preguntas frecuentes de los especialistas en investigación de inteligencia
      • Autoridad de contratación de la Categoría A: Especialista en investigación de inteligencia
    • Carreras de ciencias forenses
    • Carreras profesionales y administrativas
    • Carreras para estudiantes y de nivel básico
    • Cómo aplicar
      • Empleador con igualdad de oportunidades
      • Requisitos de empleo
      • Cómo reclamar la preferencia de los veteranos
      • Consideración prioritaria
      • Beneficios
      • Veteranos y personas con discapacidades
  • Recursos
    • Recovery Resources
    • Data and Statistics
      • Domestic Arrests
      • Staffing and Budget
    • Ley de Libertad de Información
      • About FOIA
      • Contact DEA FOIA
      • Make a Request
      • What Happens After Making a Request
      • Requester Categories
      • Fees Charged
      • Fee Waiver
      • FOIA FAQ
      • FOIA Logs and Reports
      • FOIA Library
      • Additional FOIA Links
      • FOIA Exemptions
      • What Are Exclusions?
      • Privacy Act
      • Privacy Act Exemptions
      • Privacy Impact Assessment and Management Information Systems
    • Publications
    • Galerías Multimedia
    • Programa de Asistencia a Testigos para Víctimas
      • Victim Witness Assistance Program Resources

United States Drug Enforcement Administration

  • Buscar
  • Menú Completo

Main Menu

  • Quiénes somos
  • Lo que hacemos
  • Carreras
  • Recursos
  • Recibir Actualizaciones
  • Scam Alert
  • English
  • ES

PUBLIC SAFETY ALERT

DEA Reports Widespread Threat of Fentanyl Mixed with Xylazine - DEA Reports Widespread Threat of Fentanyl Mixed with Xylazine

Drug Enforcement Administration

William Bodner Special Agent in Charge
Los Angeles
@dealosangeles
Octubre 30, 2015
Contact: Nicole Nishida
Phone Number: (571) 387-3136
For Immediate Release

Doctor Convicted Of Three Murders In Prescription Drug Overdose Case

LOS ANGELES - A Rowland Heights doctor was convicted today of three counts of second-degree murder for prescribing massive quantities of addictive and dangerous drugs to patients with no legitimate need, three of whom died of overdoses.  A jury of ten women and two men found Hsiu Ying “Lisa” Tseng, 45, guilty of 23 counts, including 19 counts of unlawful controlled substance prescription and one count of obtaining a controlled substance by fraud.

The guilty verdict marks the first time in the United States where a doctor was convicted of murder for overprescribing drugs.  Los Angeles County Deputy District Attorneys John Niedermann and Grace Rai of the Major Narcotics Division prosecuted the case, which was the result of an investigation conducted by the DEA and the California Medical Board.

“Lisa Tseng’s conviction should send a message to doctors who violate the public’s trust and engage in what is effectively drug trafficking,” said Anthony D. Williams, Special Agent in Charge of the DEA’s Los Angeles Field Division. “Along with our partner agencies, DEA will continue to aggressively target medical professionals writing prescriptions for highly addictive opioids outside the scope of legitimate medical practice.”

"This verdict sends a strong message to individuals in the medical community who put patients at risk for their own financial gain," District Attorney Jackie Lacey said.  "In this case, the doctor stole the lives of three young people in her misguided effort to get rich quick."

“This is the most severe penalty we have ever gotten on a doctor who illegally overprescribed drugs to patients,” District Attorney Lacey added.

Tseng was convicted of second-degree murder for the deaths of Vu Nguyen, 28, of Lake Forest; Steven Ogle, 24, of Palm Desert; and Joseph Rovero, 21, an Arizona State University student from San Ramon.

Nguyen died March 2, 2009.  Ogle died a month later on April 9, 2009.  Rovero died Dec. 18, 2009.  All were patients of Tseng, who prescribed a myriad of drugs for the three young men.

Tseng, licensed to practice in 1997, opened a storefront medical office in Rowland Heights in 2005.  During the timeframe when nine of her patients died in less than three years, Tseng took in $5 million from her clinic and continued dispensing potent and addictive drugs unabated.  In August 2010, the DEA executed a federal search warrant at Tseng’s Rowland Heights clinic and served an Immediate Suspension Order of Tseng’s Certificate of Registration, as investigators believed Tseng’s continued ability to prescribe controlled substances constituted an imminent danger to public health and safety. 

In closing arguments, Niedermann told jurors that in dozens of instances, Tseng kept no medical records of visits or patient prescriptions.  In many instances, she faked medical records when authorities began investigating, he said.

Tseng, who has remained in custody since March 2012, returns to court on December 14 for sentencing before Los Angeles County Superior Court Judge George Lomeli.  She faces up to life in state prison.

  • Facebook
  • Twitter
  • Email

SAMHSA Behavioral Health Treatment Locator

  • Quienes Somos
    • Sobre
    • Divisiones Nacionales
    • Oficinas Extranjeras
    • Contáctenos
    • Museo DEA
  • Lo Que Hacemos
    • Prevención de Drogas
    • Aplicacion de la Ley
    • División de Control de Desvío
    • Noticias
  • Carreras
    • Resumen
    • Agente Especial
    • Investigador de Desvío
    • Especialista en Investigación de Inteligencia
  • Recursos
    • Información sobre las Drogas
    • Programa de Asistencia al Empleado
    • Empleador con Igualdad de Oportunidades
    • Ley de Libertad de Información (FOIA)
    • Publicaciones
    • Galerías Multimedia
    • Programa de Asistencia a Testigos para Víctimas
  • Hacer Negocios
    con la DEA
    • Resumen
    • Proveedores Actuales
    • Futuros Vendedores
    • Cláusulas de Seguridad
    • Formularios de Seguridad
    • Programa de Pequeñas Empresas
  • Políticas
    • Accesibilidad, Complementos y Política
    • Políticas Legales y Descargos de Responsabilidad
    • Antidiscriminación y Represalias Acto
    • Política de Privacidad
    • Política de Igualdad de Oportunidades en el Empleo del U.S. DOJ
    • USA.gov
    • Protección de Denunciantes
Inicio

United States Drug Enforcement Administration

DEA.gov is an official site of the U.S. Department of Justice
Facebook Twitter LinkedIn Instagram

DEA Contact Center

(202) 307-1000 info@dea.gov
Contact the Webmaster