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About me

I am a partner with Caroselli, Beachler, McTiernan & Conboy, L.L.C. and the managing attorney of the Philadelphia office. I am a 1989 graduate of Temple University and a 1992 graduate of the Temple University School of Law. At law school, I co-founded and served as the Executive Editor of the Temple Political and Civil Rights Law Review and also served as a judicial intern for The Honorable Herbert Hutton of the United States District Court for the Eastern District of Pennsylvania.


In 2005, 2006 and 2007, I was named one of Pennsylvania's "SuperLawyers Rising Stars" and then in 2008, 2009 and 2010, I was named one of Pennsylvania's "SuperLawyers" by my peers for my professional achievements.  I  was also selected for membership in the Million Dollar Advocates Forum in 2003 and the Multi-Million Dollar Advocates Forum in February 2008. Membership is limited to attorneys who have won million and multi-million dollar verdicts, awards and settlements for their clients. The award recognizes recipients' excellence in advocacy.


I focus my practice on insurance and HMO bad faith cases, class action litigation involving medical provider reimbursement for services, insurance coverage disputes and complex personal injury litigation including medical malpractice actions.


I have represented physicians in a class action lawsuit against health insurance companies and health maintenance organizations over reimbursements to physicians for medical care provided to patient subscribers, as well as a separate class action on behalf of dentists who were denied millions of dollars when insurance providers paid commissions to consultants with government money.


I have also represented the parents of a child who died of a drug overdose after being denied drug rehabilitation despite medical authorization. I also obtained an injunction barring a health insurance managed care organization from denying a first remission bone marrow transplant to a patient suffering from aggressive T-cell lymphoma. I also successfully mediated a civil rights and negligent supervision claim on behalf of a minor who was sexually abused while an in-patient at a residential treatment facility.


I have written extensively on the topics of managed care liab

ility and has been published in The Legal Intelligencer and The Verdict.


I am admitted to practice before all courts in the Commonwealth of Pennsylvania and the State of New Jersey. I also am admitted to the United States Court of Appeals for the Third Circuit, the United States District Court for the Eastern District of Pennsylvania and the United States District Court of New Jersey. I am a a member of the American Association for Justice, the Pennsylvania Association for Justice and the Philadelphia Trial Lawyers Association. I also serve as a Judge Pro Tempore in the Court of Common Pleas of Philadelphia.



Practice areas


  1. Personal Injury: 25%
  2. Insurance: 25%
  3. Medical Malpractice: 25%
  4. Class Action: 25%



Free consultation (60 minutes)

Attorney endorsements

3 total 

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  • Michael S. Waddington

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


    Michael Waddington Military law Attorney
    Relationship: Fellow lawyer in community

  • Christian K. Lassen II

    The Lassen Law Firm endorses this top-notch lawyer.


    Christian Lassen Personal injury Attorney
    Relationship: Fellow lawyer in community

Contact info

Caroselli Beachler McTiernan & Conboy

1845 Walnut Street
Fifteenth Floor
Philadelphia, PA, 19103

Caroselli Beachler McTiernan & Conboy

20 Stanwix Street
Seventh Floor
Pittsburgh, PA, 15222

Caroselli Beachler McTiernan & Conboy, LLC

1845 Walnut Street
Fifteenth Floor
Philadelphia, PA, 19103



We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Pennsylvania Super LawyersPennsylvania Super Lawyers2010
Pennsylvania Super LawyersPennsylvania Super Lawyers2009
Pennsylvania Super LawyersPennsylvania Super Lawyers2008
Multi-Million Dollar Advocates ForumMulti-Million Dollar Advocates Forum2008
Pennsylvania Super Lawyers, Rising StarsPennsylvania Super Lawyers2007
Pennsylvania Super Lawyers, Rising StarsPennsylvania Super Lawyers2006
Pennsylvania Super Lawyers, Rising StarsPennsylvania Super Lawyers2005
Member, Million Dollar AdvocatesMillion Dollar Advocates2003
Association namePosition nameDuration
Pennsylvania Association for JusticeBoard of Governors2010 - Present
American Association for JusticeN/AN/A
Pennsylvania Association for JusticeN/AN/A
Philadelphia Trial Lawyers AssociationN/AN/A
Court of Common Pleas of PhiladelphiaJudge Pro TemporeN/A
Pennsylvania Association for JusticeCo-Chair Insurance Bad Faith SectionN/A
School nameMajorDegreeGraduated
Temple University - James E. Beasley School of LawLawJD - Juris Doctor1992
Temple UniversityN/AN/A1989