Van Ditmarsen Investigations

Information may not be reliable

Providing a full suite of services throughout Northern California.
Specializing in Workers Compensation and insurance defense investigations.

If you are interested in discussing our services, fees, or a particular case assignment with our staff, please call 530-244-5656 during our office hours. If we are unable to take your call immediately, please leave a message and we will return your call as soon as possible.

To request that we conduct an AOE/COE or other employment related investigation, or surveillance on a specific case, please complete the appropriate form and either email or fax it to our office. We will confirm receipt and notify you if we accept the assignment within one business day.
If you need other services, simply e-mail us the specifics and we will contact you to discuss the assignment.

Our senior AOE/COE specialist has over 25 years of med-legal experience and over 12 in the area of Workers Compensation investigations.

Van Ditmarsen Investigations is a full service firm specializing in Workers Compensation and general insurance defense fraud investigations.
We provide confidential, professional, efficient and timely services to claims adjusters, permissibly self-insured employers and insurance defense attorneys throughout northern California.
All of our investigators are employees who are thoroughly screened and given on-going training on pertinent Workers Compensation and privacy laws.
We are experienced in conducting surveillance in both rural and metro areas.
We have access to numerous databases and are capable of doing in-depth discovery quickly and affordably.
Our AOE/COE specialists have extensive med-legal backgrounds as well as years of interview experience dealing with WC issues.
We believe communication enhances our investigation results and strive to develop strong working relationships with clients. The office staff is able to answer questions and provide updates in pending cases.

Our reports are timely and focus on the pertinent information obtained and activities filmed.
We use state-of-the-art digital video equipment and media replication programs to provide you with the finest quality video possible.
Because we understand the purpose of the program, the legal burdens of the parties, the mechanics of injuries and the types of abuses that occur in the Workers Compensation field, we are able to tailor our work to ensure we meet all of your needs.
We have worked with clients and District Attorneys to prosecute claimants who filed fraudulent claims. We approach each case with the knowledge that our work might impact the outcome of such an action and are careful to document all potentially vital material without breaching any laws.
I have been a PI since 2001; have owned businesses and served in two branches of the military. I draw upon those experiences and place the utmost importance in ensuring that my staff and I provide the highest quality product to all of our clients. I guarantee that we will put forth all of our efforts to serve you.
William R. Ditmars