Our story
Our Story: Built to Deliver, Driven to Lead
From a station wagon to a nationwide fleet. In 1979, Shared Medical Services started with one idea: bring imaging to facilities that couldn’t build it themselves. Today that idea runs nationwide, with mobile CT, MRI, PET/CT, and Cardiac PET/CT for hospitals, clinics, and health systems, and no capital-intensive build required.

Since 1979
How Shared Medical Services got here
A vision on the road
1979
Where it all began
In 1979, Joe Arington was managing multiple healthcare service companies when he saw an opportunity: bring diagnostic imaging to facilities that couldn’t afford it. While traveling between hospitals across Minnesota, South Dakota, and Wisconsin, he built Shared Medical Services out of the back of his station wagon. His idea introduced a shared services model that offered healthcare providers flexibility, cost savings, and access to the latest imaging technology.
As word spread, so did the company’s reach. By 1984, the business had expanded throughout the Midwest, with mobile CT units covering routes up to 900 miles one way. To support growing demand, Shared Medical Services established its headquarters in Madison, Wisconsin, bringing on a dedicated team of Technologists and administrative staff to manage its expanding fleet and operations.
Expanding access, mile by mile
1984
Growth that changed healthcare
Shared Medical Services’ early success was just the beginning. As more providers sought flexible imaging options, the company scaled rapidly. In fact, its ability to serve both rural and urban providers led to long-standing partnerships across the region. With each new route, Shared Medical Services helped healthcare systems deliver diagnostic excellence to more patients, without infrastructure delays or capital investment.
Leading the way in imaging innovation
1987
Pioneering mobile MRI and beyond
Recognizing the growing need for MRI, Shared Medical Services launched one of the first mobile MRI programs in 1987, and mobile MRI has been part of who we are ever since. As technology evolved, with CT slice counts increasing and MRI moving to high-field systems, Shared Medical Services remained at the forefront, so providers always had access to current imaging without disruption.
Owned by employees, driven by purpose
2012
A legacy of leadership and employee ownership
What began as one man’s vision has grown into a nationwide company with 600+ employees. In 2012, the Arington family transitioned Shared Medical Services into an Employee Stock Ownership Plan (ESOP), turning every employee into a stakeholder in the company’s future. This move strengthened Shared Medical Services’ culture of purpose, collaboration, and long-term commitment to quality care.
The future of mobile imaging
Today
Committed to innovation and growth
Today, Shared Medical Services remains committed to advancing diagnostic imaging through innovation, service, and expertise. We continue to deliver mobile CT, MRI, PET/CT, and Cardiac PET/CT solutions to healthcare providers nationwide. As demand grows and technology evolves, we’re investing in our people, expanding our fleet, and refining our solutions, all to help our partners deliver better care, wherever it’s needed.
Since 1980
45 years of mobile imaging milestones
From our first mobile CT unit in 1981 to the first mobile digital PET/CT in the USA, Shared Medical Services has brought each new generation of imaging to facilities on the road. Milestones marked Industry first were the first of their kind in mobile imaging. Explore the milestones by modality.
1980
Nuclear medicine (NM) and ultrasound (US)
1981
Computed tomography (CT)
1987
Magnetic resonance imaging (MRI)
2001
Positron emission tomography (PET)
2003
Positron emission tomography/computed tomography (PET/CT)
2010
Full-field digital mammography (FFDM)
2014
First mobile GE Discovery™ IQ PET/CT in the USA
Industry first
2016
First mobile GE SIGNA™ Voyager wide bore MRI in the USA
Industry first
2017
3D mobile mammography
2018
First mobile Siemens Healthineers MAGNETOM Aera wide bore MRI in the USA
Industry first
2019
First mobile digital PET/CT in the USA
Industry first
2022
First mobile GE SIGNA™ Voyager wide bore MRI with Xpress table
Industry first
2022
First mobile Siemens Healthineers Biograph Vision PET/CT in the USA
Industry first
2024
First mobile Philips MR 5300 in the USA
Industry first
2024
Digital GE Omni Legend PET/CT added to the SMS fleet
2025
Cardiac PET/CT
2026
First mobile Cardiac PET/CT in Illinois, Wisconsin, and Minnesota
We don’t just deliver imaging.
We deliver expertise.
With decades of experience, we bring deep operational knowledge and support to every install, from site planning to go-live and beyond.