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About me

   I've been a personal injury lawyer since 1984.  I handle cases in Pennsylvania and New Jersey.  I represent only individuals who have been seriously injured in accidents caused by the carelessness of others.  I've been blessed with tremendous success in my practice.  The key to this success has been the fact that I put the interests and needs of my clients before my own ego.  I've developed a large population of former clients with whom I stay in regular contact through monthly mailings and other contacts.  Please visit my website at to hear what several of my former clients have to say.

   I'm married and have two young children. I'm very active coaching their sports teams.  I serve as the President of the Whitpain Recreation Association and as the Athletic Director of the Saint Helena School in Blue Bell, PA.

    I am an active triathlete.  I've completed over 100 triathlons, including multiple ironman distance races.  I serve on the Legal Committee of USA Triathlon.  I also enjoy fishing with my son and playing guitar, mandolin and banjo with my band, the Country Westernaires.


Practice areas


  1. Personal Injury: 24%
    32 years, 250 cases
  2. Car Accident: 24%
    32 years, 250 cases
  3. Defective Products: 24%
    32 years, 100 cases
  4. Brain Injury: 23%
    32 years, 50 cases
  5. Dog Bite: 5%



Contingent (33-40%)

Attorney endorsements

27 total 

Are you an attorney? Endorse this lawyer

  • Vaughan R De Kirby

    If you have suffered a serious injury as a result of another’s negligence whether it is a property owner, manufacturer or negligent driver Daniel J. O'Brien is the first person you should call to protect your legal rights. After practicing law for 35 years I have learned firsthand what it means to have an expert like Daniel at my side.


    Vaughan De Kirby Immigration Attorney
    Relationship: Fellow lawyer in community

  • Michael S. Waddington

    I endorse Daniel. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military law Attorney
    Relationship: Fellow lawyer in community

Contact info

White and Williams LLP

1650 Market Street
Suite 1800
Philadelphia, PA, 191037395

White & Williams LLP

457 Haddonfield Road
Suite 400
Cherry Hill, NJ, 08002-2220

White and Williams, LLP

The Atrium
East 80 Route 4
Paramus, NJ, 07652-2647



We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
AV RatedMartindale-Hubbell2010
Super LawyerSuperLawyer2006
Super LawyerPennsylvania Super LAwyers2005
Work experience
TitleCompany nameDuration
PartnerWhite & Williams LLP1984 - Present
Association namePosition nameDuration
American Association for Justice (New Jersey chapter)Member2009 - Present
New Jersey State Bar AssociationMember2009 - Present
American Association for JusticeMember1998 - Present
Pennsylvania Association For JusticeMember1998 - Present
Pennsylvania Bar AssociationMember1984 - Present
St. Helena CYO BoardAthletic Director2008 - 2011
Whitpain Recreation AssociationPresident2005 - 2012
Legal cases
Case nameOutcome
Bus Accident CaseThe dollar terms of the settlement are confidential.
See all legal cases 
Publication nameTitleDate
The Pennsylvania Auto Insurance GuideA Consumer's Guide to Pennsylvania Auto Insurance2010
Who's The Best Pennsylvania Personal Injury Lawyer for my Case?A Consumer's Guide to Choosing a Pennsylvania Personal Injury Lawyer2010
Who's the Best New Jersey Personal Injury Lawyer for My Case?A Consumer's Guyide to Choosing a New Jersey Personal Injury Lawyer2010
Mild Traumatic Brain InjuryThe Use of Lay Witnesses in the Mild Traumatic Brain Injury Case2010
Products Liability Litigation in PennsylvaniaA Consumer's Guide to Products Liability Litigation in Pennsylvania2010
Car Accident Law UpdateDistracted Driving, The New Drunk Driving2010
The Pennsylvania and New Jersey Dog Bite BookA Consumer's Guide to Catastrophic Dog Bite Litigation in Pennsylvania and New Jersey2009
School nameMajorDegreeGraduated
Villanova University School of LawLawJD - Juris Doctor1984
Speaking engagements
Conference nameTitleDate
Use of Videotape DepositionsHow to Use Depositions2013
Pennsylvania CLEThe Use of Videotaped Discovery Depositions2012
Handling the Dog Bite CaseDog Bite Cases in Pennsylvania2012
Pennsylvania CLEThe Top 10 Mistakes Defense Lawyers Make2010
Pennsylvania CLEConstruction Site Accident Litigation1997
Pennsylvania Auto Law UpdateUnderinsured Motorist Litigation1995