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Ivancich & Costis, LLP - Antioch, CA

3440 Hillcrest AveSuite 175 Antioch, CA 94531

Super Lawyers®


Free Consultation

Updated: 02/18/2024

Antioch Workers' Compensation Law Firm


Ivancich & Costis, LLP is the local and experienced workers' compensation law firm serving Contra Costa County and the Tri-Valley. Their team of seven lawyers handles workers' compensation, personal injury, social security disability, and disability retirement cases. With offices in Antioch and Dublin, CA it is easy and convenient to schedule a free consultation at either location. All three partners are certified workers' compensation specialist and two have been recognized by Super Lawyers.

About Ivancich & Costis, LLP

Previous Law Firm Name

  • Pegnim & Ivancich, LLP


  • English
  • Spanish
  • Cantonese Chinese

Practice Areas

  • Workers' Compensation 90%
  • Social Security - Disability 5%
  • Personal Injury 5%


  • 100%

Pro Bono Activities

  • Asian Law Caucus, 2011 - Present
  • Judge Pro Tem, 2010 - Present

Representative Cases

  • Acme Steel v. WCAB (Borman) CA1/1, A137915 (Cal. Ct. App. 2013)

Ancillary Businesses

  • Mediation
  • Disability Retirement




  • Kathy Empringhan, Office Manager and Calendar Coordinator
  • Terri Sameon, Med-Legal Coordinator
  • Cheryl Gessini, Benefits Coordinator
  • Jayme Ambrosilli, Senior Legal Assistant
  • Eni Guitron, Senior Legal Assistant
  • Hecther Youngquist, Legal Assistant


Offers Free Initial Consultation

Accepts Credit Cards

Office Information


3440 Hillcrest AveSuite 175 Antioch, CA 94531

Office Hours

Monday through Thursday : 9:00am-5:00pm


  • 925-776-4509

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