Joel P. Gumbiner

Attorney Profile

Top Rated Insurance Coverage Attorney in San Rafael, CA

Williams & Gumbiner LLP
 | 1010 B Street, Suite 200
San Rafael, CA 94901
Phone: 415-755-1880
Fax: 415-419-5469
Selected To Super Lawyers: 2008 - 2019
Licensed Since: 1983
Practice Areas:
  • Insurance Coverage (70%),
  • Construction Litigation: Business (30%)
Attorney Profile

Joel P. Gumbiner is a partner at Williams & Gumbiner LLP in Marin County, California, just north of San Francisco. Mr. Gumbiner has more than three decades of experience in the areas of insurance and bad faith insurance law and coverage and has represented a diverse group of individuals, commercial and government entity clients throughout the state of California and western states. He has represented policyholders in trials, appeals and in mediations and arbitrations.

Mr. Gumbiner graduated from the University of San Francisco School of Law where he belonged to the McAuliffe Honor Society, served as articles editor of USF law review and received an American Jurisprudence award among others. He has been admitted to practice law in the state of California since 1983.

Over the course of his career, Mr. Gumbiner has achieved dozens of 7 and 8 figure results for his clients in insurance coverage and bad faith litigation and arbitrations. He has also served as a court appointed mediator, discovery facilitator and arbitrator in the superior courts of both Marin County and San Francisco.  Mr. Gumbiner serves as Appraiser or Umpire in first party property insurance Appraisal proceedings and is certified to serve in those roles by the Insurance Appraisers and Umpires Association.

Outside of his law practice, Mr. Gumbiner is active in his community. He has coached multiple youth sports and, for the past 12 years, has coached his local high school Mock Trial team.  He has served on serval boards including stints as chairman of a religious school board of trustees at Congregation Rodef Sholom and as president of the Central Marin Pop Warner Football Association.  He is also active in the Marin County Bar Association and served on the Board from 2007 to 2015 and as President in 2013.

Practice Areas
Lawyer Practice Area Pie Chart

Insurance Coverage (70%): Insurance, Bad Faith Insurance

Construction Litigation (30%)

Focus Areas

Insurance, Bad Faith Insurance


Selected to Super Lawyers for 12 yearsbottom-image

Super Lawyers: 2008 - 2019

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About Joel Gumbiner

Admitted: 1983, California

Professional Webpage:


  • Northern California’s Super Lawyers, 2008
  • Law Review Comment of the Year Award
  • American Jurisprudence Award

Bar/Professional Activity:

  • Marin County Bar Association President, 2013
  • Marin County Bar Association, Board of Directors
  • Member, McAuliffe Honor Society
  • California, 1983

Pro bono/Community Service:

  • Chairman, Religious School Board of Trustees
  • Board of Congregation Rodef Sholom in Marin County
  • President, Central Marin Pop Warner Football organization
  • Board of the Central Marin Pop Warner Football organization

Scholarly Lectures/Writings:

  • Articles Editor, USF Law Review


  • Garvey v. State Farm

Industry Groups

  • American Bar Association
  • Marin County Bar Association
  • San Francisco Trial Lawyers Association
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Office Location for Joel P. Gumbiner

1010 B Street
Suite 200
San Rafael, CA 94901

Phone: 415-755-1880

Fax: 415-419-5469

Joel P. Gumbiner:

Last Updated: 2/15/2019

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