Academy Member Inducted 2017

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John N. Greer, Esq. (Ret.), Mediator, Simpsonville, Maryland.

John N. Greer, Esq. (Ret.)

Diplomate member
Patuxent Mediation Services, LLC
10400 Shaker Drive
Suite 43
Simpsonville, MD 21150
Tel: (410) 772-8821
Cell: 410 772-8821
Fax: n/a
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Recognized to Maryland Chapter for Mediation Other ADR Services: ADR Training/CME, Early Neutral Evaluation, Facilitation & Systems Design, Fact Finding, Med-Arb
Video Conferencing
  • Practice Commenced2004
  • # of MEDS (as of 4/10/23)500
  • # of ARBS (as of 4/10/23)2
Current Practice
Online / In-Person


We help you resolve disputes faster and cheaper than going to trial so you can get on with what's important in your life.


Background for John Greer
John owns and operates a full-service dispute resolution firm in the Columbia, MD area, Patuxent Mediation Services, LLC.  He offers a wide range of services for businesses, individuals, and government agencies, including Mediation, Arbitration, Settlement Conference Facilitation, Conflict Management Training, Negotiation Training, and Dispute Resolution System Design.  
John has been certified as a mediator by the Maryland Council for Dispute Resolution.  Certification, the result of a rigorous peer review, is a recognition that John meets the highest standards of professional competence. 
In recognition of his experience and expertise, John has been appointed to the Business & Technology Track for Maryland circuit court mediations. This track handles the more complex cases.  John is one of only 17 mediators in the state appointed to handle these cases.
John is an adjunct faculty member at the University of Maryland King Carey School of Law.  He teaches dispute resolution and negotiation.
The Better Business Bureau named Patuxent Mediation Services, LLC an an A+ Accredited Business.
John is a mediator on the following panels
--Better Business Bureau
--Allegany County Circuit Court
--Charles County Circuit Court
--Talbot County Circuit Court
John is an arbitrator for the Better Business Bureau conducting consumer/business arbitrations as well as lemon law auto cases.
He is also a Settlement Conference Facilitator for the Charles County Circuit Court.
Work History

Senior Counsel, Office of General Counsel, National Security Agency, 2012-13 (retired)

John's wealth of experience in the alternative dispute resolution area significantly enhanced NSA's efforts.  While Senior Counsel, he organized and hosted a week-long series of employee workshops led by conflict resolution specialists to mark NSA's 2012 celebration of Conflict Resolution Week.  In addition, his review of NSA alternative dispute resolution programs resulted in many improvements that greatly benefited the Agency and its employees.

Associate General Counsel (Cybersecurity/Information Assurance), Office of General Counsel, National Security Agency, 2008-12

John's considerable legal skills, depth of experience, sound judgment, and vision for the future played a major role in helping NSA organizations adapt to a rapidly changing operational environment.  For example, he worked with legal experts throughout the Government and in industry to address the issues presented by the Deputy Secretary of Defense's desire to provide better cybersecurity protection for the Defense Industrial Base sector of the national critical infrastructure.  The model he helped to develop was extended to other critical infrastructure sectors in an executive order issued by the President in 2013 and announced in his State of the Union Address.  In addition, working with the Department of Homeland Security and the FBI, John helped NSA navigate the difficult legal waters surrounding Government engagement with private entities regarding major cybersecurity intrusions into the U.S. economy.

Associate General Counsel (Legislation), Office of General Counsel, National Security Agency, 1999-2008

John was responsible for developing and implementing NSA's legislative strategy with respect to legislation needed from or pending with Congress.  He also guided NSA and other Administration officials through sensitive dealings with Congress, such as hearings and briefings on critical and current topics.  As a result of his extensive legislative experience, he is recognized as an expert on negotiation skills.  Prior to becoming Legislative Counsel, John served as a legislative attorney at NSA from 1996-99 and at another Intelligence Community agency from 1994-96.

Litigation Attorney, Intelligence Community, 1990-94

John handled a full range of civil and criminal litigation matters affecting the Intelligence Community.

Associate Attorney, Baltimore, MD, 1987-90

John specialized in corporate law and estates and trusts.


Case Experience

  • Appellate
  • Arts (Fine/Performing)
  • Automotive
  • Banking & Finance
  • Business Dissolution
  • Civil Rights
  • Commercial/Business
  • Community Associations
  • Condominiums
  • Construction
  • Consumer Fraud
  • Contract Disputes
  • Cross Cultural
  • Debt Collections
  • Discrimination
  • Education
  • EEOC
  • Elder Abuse
  • Employment
  • Engineering
  • Entertainment Sector
  • Environmental
  • Family Businesses
  • Industrial
  • Insurance
  • International
  • Internet
  • Labor/Unions
  • Land Use/Planning
  • Landlord/Tenant
  • Libel & Slander
  • Local Govt./Municipalities
  • Media & Communications
  • Military
  • Non-profit Organizations
  • Nursing Homes
  • Partnerships
  • Personal Injury
  • Premises Liability
  • Probate
  • Product Liability
  • Professional Fees
  • Professional Liability
  • Professional Negligence
  • Property Damage
  • Public Policy
  • Railroad & Trucking
  • Real Estate
  • Religious Institutions
  • Securities
  • Sexual Harassment
  • Software
  • Sports
  • Technology
  • Telecommunications
  • Title Disputes
  • Torts
  • Transportation
  • Trusts / Estates
  • Wage & Hour/FMLA
  • Workers' Compensation
  • Wrongful Death


Published "Mediation Matters" in June 2019 Best's Review outlining best practices that permit insurance companies to make better settlement decisions.  Click here:  Best's Review
Published "“ADR-in-a-Box” Video Successfully Rolled Out At MD Mediators Convention & Is Ready for Your Use" in March 2019 Newsletter of the ADR Section of the Maryland State Bar Association.  Click here:  ADR in Box Rollout
Academic Background
  • J.D., University of Maryland School of Law, with honors, 1987
  • M.A., Cornell University, Jacob and Louise Ihlder Teaching Fellowship, 1979
  • B.A., Colgate University, magna cum laude, Phi Beta Kappa, Charles A. Dana Scholar, 1977
Dispute Resolution Traning
American Bar Association
  -- 12th Annual Arbitration Institute, May 2019, Philadelphia PA
Strauss Institute for Dispute Resolution and University of Maryland Francis King Carey School of Law, Baltimore, MD
 --  “Breaking Impasse With Science,”2016
 --  “Professional Skills Program in Dispute Resolution:  Strategic      Negotiation,” 2013 
--  Chairperson Arbitration Training, 2019
--  Expungement Course, 2014
--  Basic Arbitrator Training, 2013
Cornell University, Scheinman Institute on Conflict Resolution, Ithaca, NY
--  “Employment Law Mediator Training,” 2013
Justice Center of Atlanta, Inc., Baltimore, MD
--  “Mediation in Workplace Disputes,” 2012
--  “Basic Conflict Management for Executives,” 2002


Center for Creative Leadership, Baltimore, MD

“Intermediate Conflict Management,” 2012

--   “Advanced Conflict Management,” 2012


Harvard Law School, Program on Negotiation, Cambridge, MA

--   “Advanced Negotiation:  Difficult Conversations,” 2006

--  “Negotiation Workshop: Ways to Organize and Use the Basic Elements of Negotiation,” 2002



Memberships & Affiliations

  • Former member, ADR Section Council, Maryland State Bar Association ADR Section
  • Member, Maryland Program for Mediator Excellence
  • Past At-Large Director, Board of Directors, Maryland Council for Dispute Resolution
  • Member, American Bar Association, ADR Section
  • Governor of Maryland’s Volunteer Service Certificate, 2013
  • National Security Agency Director’s Distinguished Service Medal, 2013
  • Presidential Rank Award for Meritorious Senior Career Employee, 2010
  • Admitted, Maryland and District of Columbia Bars

Rates Information


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