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About Us


Jos. Waldbaum, top OUI lawyer in Cambridge, MA

Joseph Waldbaum has handled approximately 4,000 OUI cases in over 60 Massachusetts courts. He has represented defendants on cases ranging from speeding tickets to first degree murder [where his client was acquitted].  He is a magna cum laude graduate of the Massachusetts School of Law and was valedictorian of his class. He also completed the National Criminal Defense College. His practice is now limited to OUI defense.

He has been an active member of the National College of OUI Defense for over fifteen years, regularly attending their seminars. He is also a member of the DUI Lawyers of America and the author of a law review article entitled DNA Databanks in Massachusetts: Will the Massachusetts Declaration of Rights Provide the Nation's First Successful Constitutional Challenge. This was published by the Journal of Law and Social Challenges.

He was chosen Chairperson by Massachusetts Continuing Legal Education for a seminar entitled: Driverless Cars: Criminal and Civil Liability held on May 17, 2017 in Boston.

Chief associate James Dunn


Chief associate James Dunn graduated with honors from Suffolk University Law School including Dean’s list and the distinguished oral advocate award.  

He has practiced criminal defense since 2009 in over seventy courts and administrative agencies.  He has handled approximately 500 cases including successfully defending clients against charges of first degree murder.

James now focuses entirely on OUI defense, RMV and Board of Appeals hearings and is an active member of The National College of DUI Defense. He assisted in research during the state-wide challenge to the use of the Drager Alcotest 9510 breathalyzer ultimately revealing that machines certified during a certain time frame were scientifically unreliable.

Our clients have said

  • "He takes the time to explain everything step by step, detail by detail," 
  • "Very professional and kind. A big help."
  • "Mr. Dunn did a great job and made things a lot easier for us"
  • "The kindnesses he extends makes a frightening event much less devastating" and 
  • "He would have made a good doctor as well."


We are drunk driving defense attorneys. We do exclusively OUI/DUI/DWI cases and serve the following areas, as well as others:

Salem, Lawrence, Newburyport, Lynn, Peabody, Gloucester, Haverhill

Ayer, Cambridge, Concord, Framingham, Lowell, Malden, Marlborough, Natick, Newton, Somerville, Waltham, Woburn

Eastern Hampshire (Belchertown), Northampton 

Brookline, Dedham, Quincy, Stoughton, Wrentham

Brockton, Plymouth, Hingham, Wareham

Boston, Chelsea, Brighton, Charlestown, Dorchester, East Boston, Roxbury, South Boston, West Roxbury

Clinton, Dudley, East Brookfield, Fitchburg, Gardner, Leominster, Milford, Uxbridge, Westborough, Winchendon, Worcester 

Attleboro, Fall River, New Bedford, Taunton

Chicopee, Holyoke, Palmer, Springfield, Westfield

Barnstable, Orleans

Greenfield, Orange