• 3200 Guasti Rd. Suite 100 Ontario CA 91761

About Us

D.A. Firm is a full-service defense firm that specializes in workers’ compensation defense. Our clients come from all business sectors, insurance companies and third-party administrators. We pride ourselves on responsive communication and aggressive defense. Our service is centered around fearlessly defending our clients’ interests and nurturing meaningful client relationships. We will provide the highest level of customer service to our clients during every stage of the file-handling process.

Who We Support

We are passionate about giving back to the community and have partnered with these organizations to provide donations and support.