Mahoney Diamond & Harnais is a distinguished criminal defense law firm widely recognized for its aggressive and experienced representation in OUI/DUI and criminal cases throughout Massachusetts. With over 20 years of dedicated service, the firm stands out for its personalized approach, deep understanding of state laws, and commitment to protecting clients’ rights and futures.
The firm’s approach is built on a foundation of extensive legal knowledge, continuing education, and a background that includes former prosecutorial experience. Jack Diamond, the lead attorney, offers 24/7 availability and free consultations, ensuring clients receive timely and informed support. The firm primarily serves individuals facing serious criminal allegations, including first-time and multiple OUI offenders, juveniles, and those accused of drug, theft, sex, and white-collar crimes.
Services Offered
- OUI/DUI Defense (First Offense, Multiple Offense, Underage OUI)
- Hardship License Assistance
- Sobriety Test Defense
- Drug Crimes Defense
- Assault Charges Defense
- Domestic Violence Defense
- Juvenile Crimes Defense
- Violent Crimes Defense
- White Collar Crimes Defense
- Sex Crimes Defense
- Theft Crimes Defense
- Criminal Defense Legal Consultation
Serving the greater Boston area with offices in Hingham, Quincy, and Plymouth, the firm is equipped to handle cases across the Commonwealth of Massachusetts. Their focus on OUI and criminal defense, combined with a reputation for achieving favorable outcomes, makes them a trusted resource for those navigating the complexities of the legal system.
