Atlas Headquarters

San Diego, CA

  •  4365 Executive Drive, Suite 400, San Diego, CA 92121
  •  858.724.5100
  •  Toll Free: 877.662.8527

Additional Location

Knoxville, TN

  •  900 S. Gay Street, Suite 1801, Knoxville, TN 37902
  •  865.299.6000

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Business Development

Our Business Development Team is made up of highly skilled and experienced professionals. Whether you are seeking coverage for a unique risk or have an account that needs a second look; our business development team is here to help you win and retain business. See Map.

S. California, S. Arizona

DJ Brancheau

  • 858.724.5060

C. California, N. Arizona

Gary Stevenson

  • 805.490.3026

N. California, Nevada

Martin Schweder

  • 916.716.5934


John Gray

  • 865.299.6011

Commercial Specialist

Juan Mora

  • 858.724.5091

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Workers' Compensation Leadership

President of Workers' Compensation

Mike Mathews

Mike Mathews is responsible for the development and national distribution of the Workers’ Compensation Division. Prior to Atlas, Mathews led program development and distribution at Arrowhead General Insurance Agency in the Workers’ Compensation Division. He has over twenty years of industry experience with a multi-line underwriting background from Ohio Casualty and Liberty Mutual. Mathews also served as Marsh’s Workers’ Compensation Practice Leader for ten years.

VP of Workers' Compensation

Dayna Schneider



VP of Underwriting

Jonathan Hooven



Assistant Vice President

Shannon Sullivan



Assistant Vice President

Kristen Hakala



Assistant Vice President

Josh LaRiccia



Commercial Leadership

President of Commercial

Charles Lasher



Vice President of Commercial

Sarah Sloan



Commercial Specialist

Juan Mora



Assistant Vice President & Program Manager

Billy Garren



Specialty Property Leadership

Executive Vice President of Property

Joe Ross



Associate Underwriter

Scott Subak



Programs Leadership

Assistant Vice President

Josh LaRiccia



Senior Underwriter

Pamela Flowers



Lead AOS Underwriter

Chammatha Aguon



Titan Claims Leadership

Executive Vice President of Titan Claims Management

Lynda Stettler

Lynda is charged with managing all aspects of the claims process and management of fulfillment and execution of our managed care vendors. Lynda is also intimately involved with our chosen SIU and Fraud detection program and recognizing all facets of subrogation planning.

Lynda has over twenty years of experience in the insurance claims space. Prior to joining Titan, Lynda served as Assistant Vice President of Claims for Berkshire Hathaway Homestate Companies where she managed the San Diego claims office of over 110 staff members. As Assistant Vice President of Claims for American Commercial Claims Administrators, Lynda guided the claims department through the acquisition by Berkshire Hathaway. Prior to that, Lynda worked as an investigator in the Special Investigation Unit for Liberty Mutual/Golden Eagle Insurance, where she was responsible for over 50 claim, premium and medical-related fraud arrests.

Lynda has participated in many insurance industry forums and currently serves on the Vice President of Sponsorship for Kids’ Chance of California, which is a non-profit organization that provides scholarships to the children of fatally or catastrophically California injured workers.



Vice President of Operations of Titan Claims Management

Patrick Williams

Patrick is responsible for all non-technical claims operations, revenue management, financial accounting and contractual compliance – as well as primary responsibility for all managed care oversight functions and ancillary service vendor relationships. Patrick works with Titan’s service partner entities to ensure technical compliance and qualitative performance, and his extensive experience in program design and implementation is leveraged to achieve efficient and cost-effective operational results for Titan’s clients.

Patrick has over 20 year of experience in both the workers’ compensation claims and managed care arenas, including extensive experience in the implementation, management, and regulatory oversight of medical cost containment programs. Before joining Titan, Patrick held executive leadership positions in the managed care space with Tristar Risk Management and Patriot Risk Services. Prior to that, Patrick served as Director of Managed Care for Berkshire Hathaway Homestate Companies where he successfully transitioned the organization’s core managed care programs to an in-sourced service-oriented model. Patrick is a graduate of San Diego State University with a Bachelor of Science in business administration/finance.



Director of Claims of Titan Claims Management

Jacqueline Wilder

Jacqueline is responsible for technical claims oversight activities, qualitative improvement, claims auditing., litigation management and broker/policyholder service. Jacqueline’s expertise in large loss reserving, claim investigation and litigation management support her analysis and audit of claim files to ensure expeditious and economical resolutions.

Prior to joining Titan, Jacqueline was a Senior Claim Representative at AIG. As a dedicated adjuster on large accounts, Jacqueline handled complex claims for owner-controlled insurance policies (OCIPs), seasonal farm labor contractors, and addiction rehabilitation facilities. Jacqueline is a graduate of Virginia Commonwealth University with a Bachelor of Science in Statistics and Operations Research.



Clinical Director of Titan Claims Management

Kelsey Diemer

Kelsey is responsible for the clinical components of Titan’s claim oversight program. This includes working closely with the administrator on medically complex or catastrophic claims, as well as technical oversight and quality assurance auditing of telephonic case management, field case management, utilization review, and pharmacy management services rendered on the Atlas claims program. Kelsey’s expertise and experience in the fields of clinical nursing and case management enable her to analyze the quality and effectiveness of clinical claims services and provide assistance and recommendations to the clinical staff to ensure cost-effective and quality medical care and optimal claim outcomes.

Kelsey is a graduate of Arizona State University with a baccalaureate degree in the Science of Nursing. She is a board-certified registered nurse in 26 U.S. states, and has earned the professional Certified Case Manager credential from the Commission for Case Manager Certification.