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About me

John has successfully tried to verdict more than 100 civil jury or bench trials and represents clients before various licensing boards, as well as in mediations and binding arbitrations. While his primary practice area still focuses on defending health care providers and long-term care facilities, he also works with clients involved in business, commercial, and personal injury litigation.


Practice areas


  1. Personal Injury: 14%
  2. Health Care: 14%
  3. Litigation: 14%
  4. Insurance: 14%
  5. Other: 44%
  6. More 

Attorney endorsements

1 total 

Are you an attorney? Endorse this lawyer

  • Kenneth Thomas Sigman

    I often turn to John for his insight on insurance and general litigation issues. I referred a client of my firm to him for an insurance coverage issue and he did excellent work.


    Kenneth Sigman State, local, and municipal law Attorney
    Relationship: Fellow lawyer in community

Contact info

Walker & Murphy, LLP

9210 Corporate Boulevard
Suite 210
Rockville, MD, 20850


DCActive 199907/10/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
AV RatedMartindale-Hubbell2012
Rising StarBaltimore Magazine2011
Rising StarBaltimore Magazine2010
Rising StarBaltimore Magazine2009
VIP List - Successful by 40Daily RecordN/A
Work experience
TitleCompany nameDuration
AttorneyGoodell ,De Vries, Leech & Dann, LLP2004 - 2006
AttorneyMcCarthy Wilson & Ethridge1999 - 2004
ClerkDistrict Of Columbia Court Of Appeals1998 - 1999
Association namePosition nameDuration
Maryland Bar FoundationDirector2012 - Present
Maryland State Bar AssociationMemberN/A
Maryland State Bar AssociationBoard of GovernorsN/A
Maryland State Bar Association, Young Lawyers SectionTreasurerN/A
Montgomery County Bar AssociationMemberN/A
District of Columbia Bar AssociationMemberN/A
Maryland State Bar Association, Planning CommitteeCo-chairN/A
Maryland Bar FoundationFellowN/A
Maryland Defense CounselSection CouncilN/A
Legal cases
Case nameOutcome
Dickerson v. Longoria, 414 Md. 419, 995 A.2d 721 (2010)N/A
See all legal cases 
School nameMajorDegreeGraduated
Catholic University of America, Columbus School of LawLawJD - Juris Doctor1998
George Washington UniversityPolitical ScienceBS - Bachelor of Science1995