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About Me

Mr. Horowitz is a shareholder with May Potenza Baran & Gillespie. He is the head of the Family Law/Domestic Relations Practice Group. David’s practice focuses on family law and domestic relations matters, including collaborative divorce, mediation, custody and child support. He is a past President of Collaborative Divorce Professionals of Arizona, and serves on the Arizona Supreme Court’s Child Support Guidelines Review Committee and the State Senate’s Domestic Relations Committee. David also serves as a Judge Pro Tempore for the Maricopa County Superior Court.

David is a certified family law specialist and is appointed to the Family Law Advisory Commission of the State Bar of Arizona Board of Legal Specialization. David teaches family law at Phoenix College and The Arizona Summit Law School.  David has presented for the following organizations/conferences:

Arizona Judicial Conference
Arizona Judicial Council
Quarles Brady Streich Lang Employment Law Symposium
Arizona Family Law Institute
American Bar Association Commission on Lawyer Assistance Programs
Commercial Law League of America
Office of the Attorney General
National Business Institute/Institute of Paralegal Education
City of Phoenix “Faces of Diversity” Lecture Series
Arizona Woman Lawyers Association
State Bar of Arizona: Court on Professionalism; annual convention; numerous Continuing Legal Education (CLE) seminars; CLE Award, 2006
Employee Assistance Professionals Association
City of Phoenix Attorney’s Office
NALS…the Association for Legal Professionals: national, local, state and regional conferences
Arizona Minority Bar Convention
International Academy of Collaborative Professionals
Collaborative Divorce Team Training
Instructor of legal writing, legal ethics, family law and economics, Phoenix College
Maricopa County Bar Association
Arizona State University Public Events


Practice Areas


  1. Child Custody: 20%
  2. Prenuptial agreements: 20%
  3. Mediation: 20%
  4. Divorce & Separation: 20%
  5. Family: 20%



Hourly ($350-425/hour)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

1 total 

  • Kristi Michelle Morley

    I endorse this lawyer.


    Kristi Morley Family Attorney
    Relationship: Fellow lawyer in community

Contact Info

May Potenza Baran & Gillespie

201 North Central Ave
22nd Floor
Phoenix, AZ, 85004


AZActive 199005/23/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
FellowAmerican Academy of Matrimonial Lawyers2014
Certified Family Law SpecialistState Bar of Arizona2011
Continuing Legal Education AwardState Bar of Arizona2006
Work Experience
TitleCompany NameDuration
ShareholderMay Potenza Baran & Gillespie2009 - Present
Adjunct Legal Studies ProfessorMaricopa Community Colleges1990 - Present
ShareholderLorona Steiner Ducar & Horowitz2000 - 2009
Member Assistance Program DirectorState Bar of Arizona1994 - 2000
Assistant Attorney GeneralArizona Office of the Attorney General1991 - 1994
AssociateLewis and Roca1990 - 1991
Association NamePosition NameDuration
American Bar AssociationMemberN/A
State Bar of ArizonaMemberN/A
Maricopa County Bar Association, Family Law SectionMemberN/A
School NameMajorDegreeGraduated
University of Arizona College of LawLawJD - Juris Doctor1990
University of ArizonaBusiness EconomicsB.S.B.A1987
Speaking Engagements
Conference NameTitleDate
IDFA Annual ConferenceSame Sex Marriage and Divorce2015
CLE By the SeaFamily Law Track2015