About Us

Managed IT Services
That Work for You

Originally just a small one-man operation out of a pickup truck and the owner’s home, beginning in 1994. OCCSI opened a service and repair store for personal computer users in 1999 in Wentzville Missouri and began providing Managed IT services for Small to Medium Sized Businesses.

Today OCCSI’s main focus is providing IT services to businesses, although we continue to have a small personal computer repair shop

OCCSI has assisted hundreds of businesses and several local governments in establishing Computer networks and solutions to meet their individual needs.

Founder and owner Bill Dickherber, a Navy Veteran, established the Core Values of Onsite Computer Consulting based on “Never selling someone something that they do not need or want “.

OCCSI provides IT Services to the Missouri Counties of: St Louis, St Charles, Lincoln, Warren, Pike, Montgomery and Franklin County. We also serve several eastern Illinois Municipalities within 150-mile radius of Wentzville, Missouri.

Meet the Team

Bill Dickherber


Bill Dickherber is a Navy Veteran with more than 40 years of Computer Technician experience Bill completed his Associate Degree in Electrical engineering during his military training and went on to compete his bachelor s degree in information systems Bill has worked with hundreds of small businesses and is well known for providing affordable solutions to hellip

Mike Evans

Administrative Assistant & HIPAA Compliance Officer

Mike joined Onsite Computer Consulting in 2015 after several years of working in the retail marketplace Mike is our go to guy for just about everything Mike provides excellent customer service to all our client s and assists with assuring speed and accuracy of procurement and delivery of parts Mike also works with our Dental and hellip

Chris Joste

Senior Technician

Chris joined Onsite Computer Consulting in 2020 with over 20 years of experience working in the IT industry Chris has extensive background in building custom computer systems troubleshooting both network and computer problems and providing solutions to both Chris provides excellence in customer service by taking pride in and enjoying his work When not working hellip

Ann Dickherber

Marketing Director

Ann just recently joined the Onsite Computer Consulting team She discovered her love for marketing as an Administrator of a local Assisted Living facility In her free time Ann loves spending time with her family and friends

Sheena Marie Labadan

Administrative Assistant

Sheena recently joined OCCSI Also have years of experience in Customer Service which she became a Subject Matter Expert in a Technical account From then on anything that s related to technology is a reminder of her past success and what more being able to help again by connecting prospective clients and generating businesss opportunities She hellip

Klara Joste

Social Media / Graphic Design

Klara joined OCCSI recently Klara is very family and friend orientated love taking care of animals and baking She really enjoys stories and loves nature as well Klara takes pride in trying to help people as much as she can When asked about graphics Klara makes it clear that I ve always been into graphics and hellip

Our Mission

We believe in building long term relationships with our customers by providing high quality, affordable services. We are dedicated to our customers, and strive to provide the best experience with every client interaction.