Mark E. Gearheart

Top rated Workers' Compensation attorney in Pleasant Hill, California

Gearheart & Sonnicksen
Mark E. Gearheart
Gearheart & Sonnicksen

Practice Areas: Workers' Compensation

Licensed in California since: 1980

Education: University of California College of the Law, San Francisco

Selected to Super Lawyers: 2004 - 2024
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Gearheart & Sonnicksen

367 Civic Drive, Suite 17
Pleasant Hill, CA 94523 Visit website


Attorney Mark E. Gearheart is the managing partner of Gearheart Sonnicksen law firm in Pleasant Hill, California. A nationally ranked trial lawyer with more than 40 years of total legal experience, Mr. Gearheart provides invaluable counsel and support to clients throughout the East Bay Area and beyond who seek their rightful workers' compensation benefits.

Certified by The State Bar of California's Board of Legal Specialization as a specialist in workers' compensation law, Mr. Gearheart provides an unmatched level of advocacy to those who need the full amount of workers' compensation to support themselves and their families when they can no longer work. Over the course of his legal career, he has achieved remarkable success helping his clients obtain the maximum amount of finances they need, and he has handled claims involving compensation for permanent disabilities, dependents recovery for workers' deaths and more.

Honored for his outstanding professionalism and service, Mr. Gearheart has earned an AV Preeminent peer review rating* from Martindale-Hubbell along with consistent recognition from The Best Lawyers in America. He has also received the 2012 Applicant Attorney of the Year award from the State Bar Workers’ Compensation as well as the Workers’ Compensation Claimant’s Attorney of the Year Award for Oakland/East Bay Best lawyers in 2017 and 2018.

A 1977 summa cum laude graduate of the University of Northern Colorado, Mr. Gearheart obtained his Juris Doctor from the University of California's Hastings College of Law in 1980. He is admitted to practice before the U.S. District Court for the Northern District of California, and he is an active member of the American Association for Justice, the National Workplace Injury Law and Advocacy Group.

A leader in his field, Mr. Gearheart is also the past president of the East Bay Chapter and current board member of the California Applicants' Attorneys Association, and he is the co-chair of the CAAA Regulations Committee. He has also served as judge pro tempore for workers' compensation claims.

*AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Rating™ fall into two categories – legal ability and general ethical standards.

Best Lawyers® and The Best Lawyers in America© are registered trademarks of BL Rankings, LLC d/b/a Best Lawyers and Co., LLC. The names, logo, and database are protected under the trademark, copyright, and fair use laws of the United States of America. Any use of name, including in electronic form, must be made only by permission and under the guidelines of BL Rankings, LLC d/b/a Best Lawyers and Co., LLC.

Practice areas

Workers' Compensation: Claimant
  • 100% Workers' Compensation: Claimant

First Admitted: 1980, California

Professional Webpage:

Educational Background:
  • Bachelor of Science in Political Science and minor in Economics, summa cum laude, University of Northern Colorado, Greeley, CO, April 1977
Bar/Professional Activity:
  • National Workplace Injury Law and Advocacy Group
  • Workers’ Compensation Judge Pro Tempore, 2004
  • Co-Chair of the CAAA Regulations Committee
  • California, 1980
  • Member, Board of Directors of the California Applicants' Attorneys' Association (Past President, East Bay Chapter)
  • United States District Court for the Northern District of California, 1980
  • Awarded “Applicant Attorney of the Year” by the State Bar Workers’ Compensation Section 2012
  • Awarded Workers’ Compensation Claimant’s attorney of the year for the Oakland/East Bay area by Best lawyers 2017 and 2018
  • The Best Lawyers in America 1999-present
  • Voted a “California Super Lawyer” for Workers’ Compensation by peers 2004-present (San Francisco magazine survey of lawyers and judges)
  • Martindale-Hubbell rating: A-V
Special Licenses/Certifications:
  • Certified by the State Bar Board of Legal Specialization as a Specialist in Workers Compensation law, 1988

Office location for Mark E. Gearheart

367 Civic Drive, Suite 17
Pleasant Hill, CA 94523

Phone: 925-671-9777


21 Years Super Lawyers
  • Super Lawyers: 2004 - 2024

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