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About me

W. Tanner is an accomplished trial attorney with a wide ranging
practice in complex litigation. In addition to securing one of the
largest medical malpractice verdicts in the courts of Pennsylvania, Mr.
Tanner has also secured what is believed to be the largest jury verdict
in Pennsylvania in a bad faith case against an insurance company.


     Mr. Tanner has been appointed by the Court as liaison counsel in mass
tort litigation in both Pennsylvania state and federal courts,
including the Orthopedic Bone Screw litigation and the Diet Drug
litigation, in which he served as sub-class counsel. His practice
interests include medical negligence, disability insurance claims,
insurance bad faith, product liability and class action litigation.


     Mr. Tanner received a B.A. in English Literature from the College of
the Holy Cross, and received his law degree with honors from Temple
University School of Law. At Temple, he received awards in the fields of
trial and appellate advocacy.


     Recognized for four consecutive years by Philadelphia Magazine as one
of the top 100 "Super Lawyers" in Pennsylvania, Mr. Tanner was named
among the Top 10 Super Lawyers in Pennsylvania in 2008, 2009 and 2010.  In 2010, the Superlawyers magazine ran a feature article describing his success
at trial.


                                                             In 2006, Mr. Tanner became one of the youngest attorneys ever invited
to become a Fellow of the
prestigious International Academy of Trial Attorneys (membership is
limited to 500 lawyers). He has also been selected for membership in the
Board of Trial Advocates (ABOTA
), and is certified as a Civil Trial
Specialist by the National
Board of Trial Advocacy




     Since 1997, Mr. Tanner has served continuously on the Board of
Directors of the Philadelphia
Trial Lawyers Association
, becoming their President in July 2007.
He often serves as a faculty member in programs devoted to the
development of trial advocacy skills, and teaches at Temple University's
Academy of Advocacy. In 2007 he was also appointed to the Board of
Directors of the non-profit Support Center for Child Advocates.


     Mr. Tanner has won over $50 million in jury verdicts in the Pennsylvania courts, and has secured even more for his clients by way of settlement of claims in Pennsylvania and around the country.  He is frequently called upon by other lawyers to take over cases prior to trial when it becomes clear the case will not settle and needs to be tried to verdict.



Practice areas


  1. Insurance Fraud: 25%
  2. Class Action: 25%
  3. Defective Products: 25%
  4. Medical Malpractice: 25%

Attorney endorsements

2 total 

Are you an attorney? Endorse this lawyer

  • John James McAneney

    Mark is a very accomplished personal injury attorney and terrific to work with. He does a great job for his clients. I am happy to endorse Mark. I would recommend Mark to anyone and I have referred my clients to him with confidence that they will be well represented.


    John McAneney Business Attorney
    Relationship: Worked together on matter

  • Joseph James Derita

    I endorse this lawyer. Mark is what I call a "heavy hitter" among my friends and colleagues. His firm, Feldman, Shepard, Wogelertner, Tanner, Weinstock and Dodig, PC, is known nationally for representing catastrophic injury victims. He has handled complex malpractice cases including obstetrical negligence cases, crashworthiness cases and bad faith cases all the way through verdict. He is the former President of the Philadelphia Trial Lawyers.


    Joseph Derita Workers compensation Attorney
    Relationship: Fellow lawyer in community

Contact info

Feldman, Shepherd, Wohlgelernter, Tanner & Weinstock

1845 Walnut St
21st Floor
Philadelphia, PA, 19103


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
President's AwardPhiladelphia Trial Lawyers Association2005
Association namePosition nameDuration
Philadelphia Bar AssociationMemberN/A
PA Association for JusticeBoard MemberN/A
Philadelphia Bar AssociationBoard of GovernorsN/A
Philadelphia Trial LawyersBoard MemberN/A
International Academy of Trial LawyersFellowN/A
Support Center for Child AdvocatesChild Advocate and Board of DirectorsN/A
Volunteers for the Indigent ProgramParticipantN/A
Medical Legal CommitteeMemberN/A
State Civil Rules CommitteeMemberN/A
American Board of Trial AdvocatesAssociateN/A
American Association for JusticeLeaders ForumN/A
Philadelphia Trial Lawyers AssociationPresidentN/A
School nameMajorDegreeGraduated
Temple University - James E. Beasley School of LawN/APA_JD1990
College of the Holy CrossN/AOther - BachelorsN/A