Kenneth D. Gack


Attorneys Fees
Bad Faith
Civil Rights
Class Action
In-Camera Review
Land Use
Mass Tort
Multi District Litigation
Personal Injury
Product Liability
Real Estate

Kenneth D. Gack, Esq. has been a full time neutral with JAMS since 1996 and has handled over 2,500 matters. Prior to joining JAMS, Ken had a private ADR practice for several years, and before that, he founded and was managing partner of a law firm where he handled a variety of cases including business litigation, construction, agribusiness, real property and personal injury matters. As an arbitrator, mediator, judge pro tem and special master/discovery referee, Ken is lauded by clients for his thorough preparation, quick grasp complex facts, and his ability to relate to all parties. Ken has a keen ability to grasp and resolve underlying insurance coverage, liability and indemnity issues that arise in business, professional liability, healthcare and personal injury cases. Clients are continually impressed by Ken’s ability to exercise the utmost persistence and candor to help parties find realistic resolutions to their disputes.

Case List

ADR Experience and Qualifications

  • Successfully mediated thousands of cases in a variety of civil litigation settings, including medical malpractice, employment, general business disputes, real property cases, healthcare, and agribusiness. 
  • Arbitrator in over 300 matters
  • Distinguished Mediator of the Year Award from the San Francisco Trial Lawyers Association in 2004. 
  • Frequent speaker on efficient and effective alternative dispute resolution. 


  • Frequently serve as arbitrator and mediator in disputes between wineries and business partners including vineyard owners, vineyard maintenance, distributors, and marketing agencies
  • Mediated case involving allegations relating to row crop production, failure to achieve anticipated production, and 'best farming practices' issues


  • Arbitrator in a case involving alleged breach of manufacturing and packaging agreement by a food distribution company
  • Arbitrator in a dispute over the acquisition of machinery via an online auction
  • Successfully mediated contract and defamation dispute involving a sports minor league team and a city
  • Mediated case involving a dispute that arose after a contractual buyout of a business
  • Mediated breach of fiduciary duty case arising after a dissolution of a Limited Liability Partnership among accountants
  • Arbitration of a suitability action against a securities broker and the registered representative
  • Mediated and arbitrated numerous attorney fee disputes, both between attorneys and firms, and between clients and attorneys


  • Multiple single family dwelling, condo, and townhome construction defect, SB800, and related matters with individual and HOA plaintiffs
  • Mediated breach of contract, consequential and delay damages by general residential contractor against subcontractor for alleged failure to meet critical path deadlines
  • Mediator and special master of construction defect claims arising from water intrusion in 32 single family dwellings, with alleged failures of stucco, flashing and window systems


  • Mediator and arbitrator for numerous employment discrimination cases, including gender, race and age discrimination
  • Mediator and arbitrator for numerous wrongful termination matters, including whistleblower actions
  • Mediation of wage and hour claims, including classification, meal and break claims, with penalty claims
  • Handled action for failure to accommodate disability in violation of FEHA by employee against public entity


  • Mediated case involving a fire abatement recovery action by State against Railroad operator
  • Mediation of contractual dispute over wind turbines and government regulation/impossibility defense


  • Mediation of indemnity/contribution action by skilled care facility against nursing registry for alleged failure to provide competent staffing, seeking recovery of settlement funds paid in wrongful death action
  • Mediation of multiple cases involving employee and former employee actions against hospitals and health care organizations, including workplace harassment, stark and compliance issues

Personal Injury

  • Extensive experience in all types of PI/BI claims
  • Mediated case involving burn injuries of high school welding class student allegedly arising from failure of teacher to enforce safety standards
  • Mediated case involving bodily injury and premises liability against city, county, state, and district public entities
  • Mediated case involving insurance and indemnity issues relating to a leg amputation arising from fall off of a fork lift
  • Mediated multiple cases involving allegations of elder abuse and wrongful death of patients resulting from care provider abuse
  • Mediated case with claims of female citizens against a public entity, Sheriff’s Department and patrol officer for unlawful strip searches

Product Liability

  • Mediated product liability action against manufacturer and café operator for alleged electrocution from lack of proper grounding and GFI circuit
  • Special Master in product liability case involving subrogation claims by manufacturer of heating units against manufacturer of components for losses incurred from fires
  • Mediated medical product liability case involving allegations of surgical stapler failure
  • In medical malpractice, personal injury and healthcare cases, handled many issues of product liability related to defective medical devices and products

Professional Liability

  • Mediated hundreds of medical malpractice cases involving failure to diagnose, wrongful death and other claims
  • Mediated medical malpractice case involving failure to diagnose and treat strep B infection in a homeless man, with resultant multiple amputations
  • Mediated medical malpractice case involving failure to diagnose and provide emergency response to hypoxic event of drug rehabilitation patient with resultant irreversible brain injury
  • Mediated case involving accounting errors in a real estate transaction
  • Mediated sensitive medical malpractice case against a doctor with additional charges of sexual assault

Real Property

  • Trial judge for action to interpret and apply common area maintenance and improvement obligations among appurtenant commercial property owners
  • Handled bad faith action by homeowners policy insured for alleged delay in investigation, evaluation and appraisal, with resultant damages of mold and aggravated remediation costs

Honors Membership Awards

  • Recognized as a ADR Northern California Super Lawyer, San Francisco Magazine, 2006-2012
  • Distinguished Mediator of the Year Award, San Francisco Trial Lawyers Association, 2004
  • President and Board Member, Legal Aid of Sonoma County, 2010-2012
  • Member, Association of Business Trial Lawyers
  • Member, San Francisco Trial Lawyers Association
  • Frequently requested lecturer on ADR and civil litigation
  • Member, American Healthcare Lawyers Association ADR Panel
  • ADR training includes the Advanced Mediation Training Program at the Pepperdine University Institute for Dispute Resolution, the National Association of Securities Dealers and California State Bar ADR Roundtables


  • JAMS, 1996-present
  • Private practice emphasizing alternative dispute resolution services, 1994-1996
  • Founding and managing partner, James, Gack, Bernheim and Hicks, Santa Rosa, 1982-1994
  • Judge pro tem, Sonoma County Superior Court, 1983-present
  • J.D., Pepperdine University, 1976
  • B.A., Anthropology, Cal. State University, Dominguez Hills, 1973