Radiology services provider Radisphere has been acquired by AmSurg, an operator of ambulatory surgical centers.
In a January 21 news release, AmSurg said it had completed the acquisition and is folding Radisphere's operations into its Sheridan physician services division. The deal adds Radisphere's more than 100 radiologists to Sheridan's network.
The combination of Radisphere and Sheridan will create a radiology services provider that operates in 25 states and reads more than 3 million imaging studies per year. AmSurg president and CEO Christopher Holden said the company will continue "to evaluate and execute on" opportunities like Radisphere that offer growth for the company.
![Axial images from unenhanced calcium score cardiac CT (left) and curved planar reformation images from CT angiography (right) show that higher long-term exposure to air pollution is associated with greater coronary artery calcium and more obstructive coronary artery disease (CAD). Top row: Images in a 68-year-old male patient with higher 10-year mean ambient air pollution exposure (7.9 μg/m3 for particulate matter measuring ≤2.5 μm in diameter [PM2.5] and 17.4 parts per billion [ppb] for NO2) with extensive CAD (coronary artery calcium score [CACS] >1,000 and obstructive CAD [≥70% diameter stenosis]). Bottom row: Images in a 57-year-old female patient with lower 10-year mean ambient air pollution exposure (6.3 μg/m3 for PM2.5 and 4.6 ppb for NO2) with no CAD (CACS = 0 and no obstructive stenosis).](https://img.auntminnie.com/mindful/smg/workspaces/default/uploads/2026/06/hanneman.r6SMLzkezo.png?auto=format%2Ccompress&dpr=2&fit=crop&h=167&q=70&w=250)
