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About me

Mr. Parks joined Armstrong, Donohue, Ceppos & Vaughan with experience in litigation, government, policy, and politics.  Most recently, he served as an Assistant State’s Attorney for Prince George’s County in the specialty Handgun Unit prosecuting gun crimes in the Circuit Court.  During his tenure in the State’s Attorney’s Office, Mr. Parks handled cases on issues ranging from white collar fraud to violent crimes.  He also served as a Special Assistant State’s Attorney for Baltimore City. 


A graduate of the Georgetown University Law Center and Michigan State University, he has worked for the Michigan House of Representatives as a Legislative Aide for two members of the House leadership and as a campaign manager in a targeted legislative race.  He has also worked in the United States House of Representatives and the United States Senate.  During the 2004-2005 election cycles, Mr. Parks was a campaign and political consultant with FieldWorks, LLC, where his clients included national party committees, labor unions, and congressional candidates.


While in law school, Mr. Parks was selected to the Georgetown University Law Center Barristers’ Council Moot Court Division based upon his achievements in oral and written appellate argument.   He also worked as an intern for The Honorable Carol Ann Dalton of the District of Columbia Superior Court and as a research assistant for Professor Peter B. Edelman.


Mr. Parks sits on the boards of the Maryland Teen Court Association and the Georgetown University Law Center Recent Alumni Advisory Council.  He is also the American Bar Association Young Lawyers Division liaison to the Law Student Division and a co-founder of the J. Franklyn Bourne Bar Association Young Lawyers Division.  Mr. Parks is also an Adjunct Professor of Criminal Law and Procedure in Baltimore.


Mr. Parks now focuses on complex civil litigation, although he still handles some criminal and juvenile cases.

Practice Areas

  • Medical Malpractice Law

  • Civil Litigation

  • Personal Injury Litigation

  • Trial Practice

  • Criminal Litigation

  • Appellate Litigation

Professional Organizations

American Bar Association

Maryland State Bar Association

Bar Association of Montgomery County

J. Franklyn Bourne Bar Association

National Bar Association

Hispanic National Bar Association 


Michigan State University, B.A.

Georgetown University Law Center, J.D.

Admitted To Practice



Contact info

Armstrong, Donohue, Ceppos & Vaughan, Chartered

204 Monroe Street
Suite 101
Rockville, MD, 20850-4425

Practice areas


  1. Litigation: 40%
  2. Employment: 20%
  3. Criminal Defense: 20%
  4. Election Campaign: 10%
  5. Personal Injury: 10%



Free consultation (30 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

3 total 

Are you an attorney? Endorse this lawyer

  • Gary Hale Gerstenfield

    I highly recommend Mr. Parks as a brilliant attorney possessed with the highest of ethical standards. I have known Derron professionally and personally for many years and have great respect for talents, warmth and zeal for the law. Gary Gerstenfield


    Gary Gerstenfield Criminal defense Attorney
    Relationship: Fellow lawyer in community

  • No photo

    Mr. Parks is a walking legal encyclopedia. He is always the most well versed and well prepared attorney in the courtroom. Additionally, there are very few, if any, attorneys who can persuade a jury like Mr. Parks can. I endorse Mr. parks without hesitation.


    Ronan Gulstone Criminal defense Attorney
    Relationship: Fellow lawyer in community


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
National Moot Court Competition SemifinalistHispanic National Bar Association2004
Work experience
TitleCompany nameDuration
General CounselPotomac Wiffleball League2005 - Present
Assistant State's AttorneyPrince George's County State's Attorney's Office2006 - 2007
Legal Intern to Hon. Carol Ann DaltonSuperior Court for the District of Columbia2002 - 2002
Association namePosition nameDuration
J. Franklyn Bourne Bar AssociationPresident2009 - Present
American Bar AssociationMemberN/A
Maryland State Bar AssociationMemberN/A
Bar Association of Montgomery CountyMemberN/A
National Bar AssociationMemberN/A
Hispanic National Bar AssociationMemberN/A
Legal cases
Case nameOutcome
State of Maryland v. Fredrick Andrew SchleeDismissal of All Charges
See all legal cases 
School nameMajorDegreeGraduated
Michigan State UniversityN/ABA - Bachelor of ArtsN/A
Georgetown University Law CenterLawJD - Juris DoctorN/A
Speaking engagements
Conference nameTitleDate
Getting to Yes: Securing a Job in a Tough EconomySecuring a Job in a Tough Economy2009