Benefit Administrative Systems, LLC (BAS)

Founded in 1983, BAS is a results-driven third party administrator with a track record of delivering cost savings and customer satisfaction. We utilize our services, tools, and partners to create a robust partially self-funded plan as unique as each client.

BAS currently administers employee benefit programs for over 700 employer groups, ranging in size from 25 to 16,000 employees. BAS employs over 500 knowledgeable employees with vast experience in the industry. We have main offices located in Chicago, St. Louis, and Fresno.

Interested In BAS Services?


Customer Service & Care

BAS believes in providing customers with personalized, one-on-one service. Our Customer Care Unit is a team of specialists with extensive knowledge of claims processing and benefit plan language to ensure a seamless customer service interaction.

Customization & Flexibility

BAS brings together the advantages of bundled and unbundled benefit administration, giving the employer control and flexibility. With access to over 50 local, regional, and national PPO networks, bringing best of class vendor partners to master your Plan goals.

Integrated Tools & Services

BAS partners with our clients, brokers, and vendors to deliver a cohesive package of services to our members. Our integrated tools and services steer employees to best cost providers and deliver innovative, low cost solutions for our clients.

Reporting & Analytics

BAS turns data into actionable insight, allowing health care costs to be managed proactively. BAS’ analytics allow the client to review their health benefit spend and identify areas for potential improvement.

Personal Assistance Services

How a shoebox of medical bills shaped our customer culture

Carl was diagnosed with cancer. Struggling to keep up with the management of medical bills as well as deal with his illness, he quickly accumulated close to $800,000 in outstanding medical bills. Carl was a group member at BAS, and his wife contacted us - desperate for help.

The resulting actions taken by BAS staff paved the way for the Personal Assistance Model.