Skip to main content

About me

I have a passion for resolving business disputes. I am deeply involved in conflict management and business dispute resolution from several different perspectives and in several different contexts. I am a business litigation lawyer, an Arbitrator, and a Mediator. I represent and advocate forcefully for my clients in settlement negotiations, arbitration or mediation proceedings, or court litigation; I also help businesses that have received a subpoena from a governmental agency.  And I have been teaching ADR Law (Alternative Dispute Resolution) as an Adjunct Professor at St. John's Universith School of Law. 


Please note: I am licensed to practice law only in New York State.  My office is located in Nassau County, on Long Island.


I help entrepreneurs, professionals, and companies who have been stung personally, professionally, and financially by a painful business dispute, often at the hands of a partner, contractor, vendor, associate, or other affiliate.  My practice is dedicated to resolving clients’ business disputes creatively through arbitration, mediation, or court litigation to achieve success and peace of mind.


Some disputes require outright litigation battle to achieve resolution. Others are more susceptible to "creative" business dispute resolution.  This means looking for solutions beyond the obvious.  It also involves attempting to achieve results that are beneficial or at least palatable for both sides rather than mechanically resorting to bashing each others' heads in (a process that principally benefits the lawyers' pockets) simply because the attorney doesn’t know how to do anything else.  It also can lead to exploring whether there's a possibility for presently warring parties to work together in future.  


I place particular emphasis upon effective, responsive communication with clients, helping to inform and guide them through the often unfamiliar and confusing maze of business litigation and alternative dispute resolution (ADR).  Other central services include helping clients avoid business disputes by performing litigation risk management (troubleshooting for potential areas of litigation liability); representing clients who have received a subpoena from a governmental agency such as the New York State Attorney General or the United States Department of Justice; as well as drafting, reviewing, and/or negotiating confidentiality and non-competition agreements, commercial leases, and other types of contracts.  


My firm practices primarily in New York State and Federal trial and appellate courts, and before arbitrators and mediators in the New York metropolitan area.  Based on my unique level of experience in Alternative Dispute Resolution (ADR), I provide ADR consultation services to other attorneys.  I also serve regularly as New York or Long Island local counsel to out-of-state lawyers or companies involved in litigation in this region, respecting and protecting referring professionals' relationships with their clients.  


My practice background includes clerkship with a federal Magistrate-Judge early in my legal training; service with a significant midtown Manhattan law firm; more than a decade as a partner in a medium-sized, high-quality Nassau County, Long Island law firm; and, since 2000, managing my own firm.  


In addition to my law practice, I devote significant efforts to my service as a professional neutral commercial arbitrator for several major forums and as a private professional neutral commercial mediator.  As an arbitrator, I hear and adjudicate business dispute cases, rendering binding Orders and Awards that are legally enforceable in court.  As a mediator, I facilitate consensual resolution of business disputes, resulting in the parties' written settlement agreement.  In each of my capacities, I handle conflict management in the context of business dispute resolution.   


I also have personal experience running a small business: From 1988 through 2007, as President of a domestic real estate company owned by an Australian client, I managed autonomously the business operations and commercial real estate holdings of this entity, acting in all respects as a commercial landlord concerning property in Manhattan.  I regularly serve on the boards of New York not-for-profit corporations, and help to run legal and business networking groups, enabling me to develop and foster a broad and deep network of trusted professionals on whom I can rely to assist my clients and colleagues for matters that are outside the areas of my expertise.   

Business disputes should not be handled absent expert assistance.  Not only should you not seek to deal with a brewing dispute by yourself, you also should be wary of hiring those whose legal practice focuses in other arenas (e.g., corporate transactional work; tax; real estate; personal injury; and the like) to handle the legal aspects of your business dispute.  I don't presume to be able to practice in their areas; you should be cautious about having them venture into these specialized waters.   


What distinguishes my service from that of other lawyers:

  • give extremely responsive, patient, and timely personal attention to client questions and matters; encourage open, frequent communication between attorney and client

  • am appropriately aggressive in litigated matters, yet able to settle matters out of court when advantageous to my client

  • am personally involved in every client matter, and do not delegate cases to inexperienced junior colleagues unfamiliar with the case or the law

  • my service as a professional neutral arbitrator (essentially a private judge) for two national ADR forums provides "insider's" perspective on the ADR/litigation process

  • have access to an unusually broad and deep cultivated personal network of top-notch professionals, ranging from specialty practice lawyers (through helping to run a lawyers' networking group) to accountants to most other service providers; refer business to my clients

  • refrain from accepting matters outside my areas of practice (not a "jack-of-all-trades"); instead, energetically participate in the process of recommending other professionals appropriate to the particular task or matter, for the mutual benefit of the client and my network of professionals

  • am zealous about fairness to clients in billing practices

  • run a business (beyond the law practice) since 1988, and serve on boards of several not-for-profits continuously since the mid-1980s, and so have substantial and direct hands-on business management experience

  • make presentations at public speaking engagements as well as write and publish pieces in various online and print media – recognized expertise

  • have handled hundreds of business ADR (Alternative Dispute Resolution) proceedings as lawyer/advocate for my clients or as professional neutral (arbitrator or mediator) 

  • treat my clients as though they are relatives -- ones I like 

  • provide Manhattan sophistication and quality at Long Island billing rates




Photos and videos

853883 1340656054

Practice areas


  1. Arbitration: 40%
    29 years
  2. Mediation: 30%
    23 years
  3. Lawsuits & Disputes: 20%
    34 years
  4. Litigation: 10%
    34 years



Free consultation (45 minutes)

Payment types:


Attorney endorsements

10 total 

Are you an attorney? Endorse this lawyer

  • Justin Corey Frankel

    Resolution is the goal in every dispute. David Abeshouse is a skilled and effective mediator who has proven over the ten years I have known him to consistently and effectively work with parties to resolve their differences in countless disputes. David is a nationally known and extremely respected expert in alternative dispute resolution. Without reservation I would encourage lawyers and non-lawyers to contact David for his services.


    Justin Frankel Employee Benefits Attorney
    Relationship: Worked together on matter

  • Elliot David Samuelson

    I endorse this lawyer. He is one of the most outanding attorneys involved with arbitration, mediation, and other alternate dispute resolutions in commercial matters. Both his ethics and academic background, and experience in these fields has earned him an outstanding reputation among his peers. He is highly recommended.


    Elliot Samuelson Marriage & Prenuptials Attorney
    Relationship: Fellow lawyer in community

Contact info

626 RXR Plaza
Uniondale, NY, 11556-0626


NYCurrently registered 198303/13/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
"AV - Preeminent" rating (5.0/5.0)Martindale-Hubbell2013
NY Metro Area “Super Lawyers”; Alternative Dispute Resolution.SuperLawyers2013
NY Metro Area “Super Lawyers”; Alternative Dispute Resolution.SuperLawyers2012
FellowCollege of Commercial Arbitrators (CCA)2012
Charter Member, NY Chap., Natl. Acad. of Distinguished NeutralsNY Academy of Mediators & Arbitrators (NYAMA -- National Academy of Distinguished Neutrals) (NADN)2012
"AV - Preeminent" rating (5.0/5.0)Martindale-Hubbell2012
2012 Long Island Legal Eagles: Top-Rated Attorneys on L. I.Long Island Pulse Magazine2012
"AV - Preeminent" rating (5.0/5.0)Martindale-Hubbell2011
2011 Long Island Legal Eagles: Top-Rated Attorneys on L. I.Long Island Pulse Magazine2011
2010 Long Island Legal Eagles: Top-Rated Attorneys on L. I.Long Island Pulse Magazine2010
"AV - Preeminent" rating (5.0/5.0)Martindale-Hubbell2010
Certificate, Transformative Mediation Training 35-hour courseHofstra University School of Law Mediation Clinic and the Institute for the Study of Conflict Transformation2009
Business of the Year, Award of Excellence -- FinalistHuntington Regional Chamber of Commerce/ L.I. Business News2004
"AV" (top) RatingMartindale-Hubbell Law Directory1995
Work experience
TitleCompany nameDuration
PrincipalLaw Office of David J. Abeshouse2000 - Present
Associate, then PartnerAckerman Levine Cullen Brickman & Limmer LLP & predecessors1986 - 2000
Litigation AssociateGolenbock and Barell1984 - 1986
Litigation AssociateColleran, O'Hara, Kennedy & Mills1982 - 1984
Association namePosition nameDuration
St. John's University School of LawAdjunct Professor of Alternative Dispute Resolution Law2012 - Present
College of Commercial Arbitrators (CCA)Fellow2012 - Present
NY Academy of Mediators & Arbitrators (NYAMA) - National Academy of Distinguished Neutrals) (NADN) Member, NY Chap., Natl. Acad. of Distinguished Neutrals2012 - Present
Institute for Conflict Mangement (ICMADR)Arbitrator, Commercial Panel of Neutrals2006 - Present
National Arbitration ForumMediator, Panel of Neutrals2006 - Present
Nassau County Bar Association Alternative Dispute Resolution (ADR) CommitteeChairperson2004 - 2006
Health and Business Alliance, Inc.Member, Board of Directors2004 - Present
International Legal Malpractice Advisors, LLC (Washington, D.C.)Senior Advisor2004 - 2007
Long Island Entrepreneurs Group, Inc.Member, Board of Directors2003 - Present
American Arbitration AssociationArbitrator, Commercial Panel of Neutrals2002 - Present
Attorney Round Table -- Nassau CountyCo-founder2001 - Present
National Arbitration ForumArbitrator, Commercial Panel of Neutrals1999 - Present
University of Pennsylvania Secondary Schools CommitteeMember; alumnus interviewer, undergraduate admissions.1995 - 2009
The New York Virtuosi Chamber Symphony, a not-for-profit professional orchestraMember, Board of Directors; General Counsel; President1988 - 2007
American Bar AssociationMember1983 - Present
Nassau County Bar AssociationMember1983 - Present
New York CityBar (ABCNY)Member1983 - 2011
New York State Bar AssociationMember1983 - Present
New York County Lawyers AssociationMember1983 - 2011
Legal cases
Case nameOutcome
Mediations, Arbitrations, Court LitigationADR (arbitration and mediation) typically provides businesses with fast, fair, expert, economical justice.
See all legal cases 
Publication nameTitleDate
Guest blog post for Basso On Business/Blogging with Rob"Don't Be Penny-Wise and Pound-Foolish With Contract Law"2011
Guest blog post for Basso On Business/Blogging with Rob"Preventive Legal Medicine: Strategize to Keep Your Business Disputes Out of Court"2011
Guest blog post for Basso On Business/Blogging with Rob"Civility and Negotiations"2011
New York Enterprise Report“Business Dispute Resolution For Tough Times”2009
Effectively Staffing Your Law Firm (Book published by ABA)"Suite Alternatives to Staffing" (chapter)2009
ABA's GP|Solo magazine"My Pal Esquire: Maintaining Social Contacts With Clients"2008
ABA's Law Trends & News, General Practice/Small Firm Section"FAQ re: ADR (Frequently Asked Questions About Alternative Dispute Resolution: Commercial Arbitration and Mediation).2008
ABA's GP|Solo magazine"Anxious and Depressed or Energized and Motivated" -- deals with positive as well as negative effects of stress on legal and other professionals.2007
Tips From The Top (The Alternative Board)"Piercing the ‘Corporate Veil"2006
How to Capture and Keep Clients: Marketing Strategies for Lawyers"Five Easy Ways to Use Daily Activities as Marketing Tools."2005
New York Law Journal"The Power of Networking: Lawyers Who Are 'Resource Hubs' Add Value For Clients -- And Themselves."2005
ABA's GP|Solo magazine (Vol. 22: Issue 7)"Civility and Negotiations"2005
School nameMajorDegreeGraduated
University of PennsylvaniaEnglishBA - Bachelor of ArtsN/A
Vanderbilt University Law SchoolLawJD - Juris DoctorN/A
Speaking engagements
Conference nameTitleDate
Vanderbilt Univ. School of Law ADR Org.; Career Services OfficeCareer Options: A Conversation With Business Litigator, Mediator, and Arbitrator David Abeshouse2012
Touro Law School -- Prof. Hal Abramson's Mediation CourseMediation Representation -- Guest instructor2012
St. John's Univ. School of Law, Adjunct Law Professor"Alternative Dispute Resolution Law" -- course: Negotiation, Mediation, and Arbitration2012
Hofstra University Law School Annual Informational Career FairPanelist and Mentor2012
Attorney Round Table Networking GroupSocial Media & Your Law Practice: Good, Bad, or Indifferent?2012
WRHU-FM radio and online -- The Profit Express showThe Power of Personal Networking in a Digital World (1 hour)2011
Touro Law School -- Prof. Hal Abramson's Mediation CourseMediation Representation -- Guest instructor2011
NY XPO For Business, Javits Center, NYCUnderstanding the Legal Implications of Social Media (panel presentation)2011
Moritt Hock & Hamroff CLE programAppropriate Dispute Resolution: Mediating Business Cases2011
Law Clips LLC, online telewebinarsKnow Your Options About How to Resolve Business Disputes Without Going to Court -- 1 hour telewebinar2011
Constant Contact; 3-day "Get Down to Business With Social Media" program, NYC"Social Media and the Law" panel workshop2011
Cohen Greve, CPAs -- CPE programAppropriate Dispute Resolution: Arbitrating and Mediating Business Cases2011
Business Intensive Entrepreneurship course; New York University (NYU)Business Dispute Resolution component2011 -- "Help Wanted" talk show (1/2 hour)"ADR (Alternative Dispute Resolution) for Business Owners2010
WRHU-FM radio and online -- The Profit Express showStraight Talk About 21st Century Marketing for Professional Service Providers, From One of Us (1 hour)2010
Ultimate Abstract, 1.5 CLE Course, Melville Marriot"Business ADR for Lawyers -- What ADR Can Mean For Your Practice"2010
ODNLI -- HauppaugeConflict Management2010
Negotiation & Mediation Workshop, co-presented with John W. TinghitellaNegotiation & Mediation Workshop (3 hours)2010
Hofstra University Law School Annual Informational Career FairPanelist and Mentor2010
Hofstra Univ. Law School -- Law Student Boot Camp student workshopPanelist and Mentor2010
Business Intensive Entrepreneurship course; New York University (NYU)Business Dispute Resolution component2010
Attorney Round Table Networking GroupLinkedIn: How Can it Benefit My Practice, and How Do I LinkIn? A Discussion of How and Why to Use LinkedIn.2010
Gotham Networking, Long Island Legal Group and Israeloff NYC Legal GroupThe Inside Scoop on Business Alternative Dispute Resolution (ADR)2009
Corporation and Commercial Law Committee, Suffolk Bar"Business Dispute Resolution: Don't Litigate -- Instead, Arbitrate or Mediate."2009
Business Intensive Entrepreneurship course; New York University (NYU)Business Dispute Resolution component2009
Association for Conflict Resolution (ACRGNY) Annual MeetingPublic Relations Initiatives and Marketing Ideas for the ADR Practitioner2009
Theodore Roosevelt American Inn of Court"Mediation in Business Cases."2008
Nassau County Bar Association/Nassau Academy of Law, Mineola, NY -- CLE Course.CLE Course: "Networking for Lawyers."2008
Long Island Consultants Network of the IEEE -- meeting seminar.Seminar: "Alternative Dispute Resolution (ADR) for Engineers."2008
Joint meeting of the NCBA Alternative Dispute Resolution Law Committee and the Accountants and Attorneys Committee."How Mediation Can Benefit Accountants, Attorneys, and Their Clients."2008
"The Profit Express" -- Radio Show (Interview)"The Trusted Advisor" -- Building the Relationship Between Lawyer and Small Business Clients2008
Hauppauge Industrial Association (HIA),at Sheraton L.I. Hotel, Hauppauge, NY -- HIA's Networking & Leadership Forum.HIA's Networking & Leadership Forum -- Panel of three presenters; topic: "Next Generation Networking -- Networking 2.0"2007
CLE Abstract, Amityville, L.I., NY -- CLE Course.CLE Course: "ADR For Lawyers -- What Alternative Dispute Resolution Can Mean For Your Practice."2007
Assn. for Conflict Resolution, Greater NY Chapter (ACRGNY), 2007 Annual Conference; at Cardozo Law School, NYCConference theme: "Finding Quality: Promoting Excellence in Dispute Resolution"; one of two panelists leading workshop presentation; topic: "Advocate Perspectives -- Selecting a Mediator."2007
WCWP Radio, 89.7 FM and online at -- Brookville, NY -- radio interview show.Alternative Dispute Resolution (ADR) -- the alternatives to resolving business disputes in court by going to arbitration or mediation.2006
The Alternative Board (TAB) -- Suffolk, Commack, NY (Board 501) -- meeting seminar."Dissecting the Key Elements of a Good 'Partnership' (Shareholders, LLC, etc.) Agreement: A Business View."2006
Nassau County Bar Association/Nassau Academy of Law, Mineola, NY -- CLE Course.CLE Course: "Ethics and Professionalism: Leveraging Your Personal Brand."2006
Gotham Networking, Friars Club, Manhattan -- seminarModerator, seminar: "Search Engine Optimization (SEO) Roundtable."2006
Entrepreneurs @ Marble Collegiate Church, Manhattan -- seminar"Legal Basics for Growing Businesses: Possibilities and Pitfalls."2006
The Alternative Board (TAB) -- Suffolk, Commack, NY (Board 402) -- meeting seminar."Dissecting the Key Elements of a Good 'Partnership' (Shareholders, LLC, etc.) Agreement: A Business View."2005
New Jersey Institute of Technology Graduate School of Business Management, Newark -- Seminar."Alternative Dispute Resolution for Businesspeople."2005
Nassau County Bar Association/Nassau Academy of Law, Mineola, NY -- CLE Course/Dean's HourCLE Course -- Moderator, Dean's Hour: "7th Annual Securities Arbitration Update."2005
Nassau County Bar Association/Nassau Academy of Law, Mineola, NY -- CLE CourseCLE Course: "Ethics and Professionalism: Time Management."2005
American Bar Association Annual Meeting, Hyatt Regency, Chicago, IL.CLE Course -- panel presentation: "How to Capture and Keep Clients: Marketing Strategies for Lawyers."2005
Amer. Arbitration Assn. @ Symbol Technologies, Inc., Holtsville, NY -- in-house CLE presentation to VP/General Counsel & staffCLE Course -- sole presenter, in-house presentation to VP/General Counsel and corporate legal department; topic: "Managing Your Commercial Arbitration."2005
National Kitchen and Bath Association, Nassau Chapter, Jericho, NY."When Selling the Dream Becomes a Nightmare: How to Avoid and Limit Problems With Customers."2004
Nassau County Bar Association/Nassau Academy of Law, Mineola, NY -- CLE Course/Dean's Hour.CLE Course -- Moderator, Dean's Hour: "6th Annual Securities Arbitration Update."2004
American Arbitration Association, Nassau County Bar Association, Mineola, NY -- CLE Course.CLE Course: "Recent Trends in Commercial Mediation and Arbitration."2004
Long Island Entrepreneurs Group, Inc. -- Event: "Taking Networking to the Next Level -- A How-To Primer."Event Chair and Master of Ceremonies: "Taking Networking to the Next Level -- A How-To Primer," featuring keynote speaker Billy McDermott (185 attendees).2003
American Arbitration Association, Garden City Hotel, Garden City, NY -- CLE Course.CLE Course: "Arbitration Advocacy for Attorneys."2003
Womens Bar Association of the State of New York, Queens Chapter -- Meeting.CLE Course -- Moderator, presenter: "Selected Topics in ADR 2002: Commercial Arbitration and Mediation."2002
New York State Society of CPAs (NYSSCPA), Nassau Chapter -- Meeting, Jericho, NYCPE Course: "Alternative Dispute Resolution for Accounting Professionals."2001