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RadNet is an American
radiology Radiology ( ) is the medical specialty that uses medical imaging to diagnose diseases and guide treatment within the bodies of humans and other animals. It began with radiography (which is why its name has a root referring to radiation), but tod ...
firm. The company operates
outpatient A patient is any recipient of health care services that are performed by healthcare professionals. The patient is most often ill or injured and in need of treatment by a physician, nurse, optometrist, dentist, veterinarian, or other healt ...
diagnostic imaging services. Headquartered in Los Angeles, California, RadNet is the largest operator of freestanding, fixed-site diagnostic imaging centers in the United States, based on the number of locations and annual imaging revenue. As of 2025, the company owns and/or operates over 400 imaging centers across Arizona, California, Delaware, Florida, Maryland, New Jersey, New York, and Texas.


History

RadNet was founded in 1981 as a small imaging center in
Los Angeles Los Angeles, often referred to by its initials L.A., is the List of municipalities in California, most populous city in the U.S. state of California, and the commercial, Financial District, Los Angeles, financial, and Culture of Los Angeles, ...
. In 1992 the company was bought by Primedex Health Systems, a California-based management company that catered to small medical clinics. Many of the company's new initiatives were centered around diagnostic imaging services, which were managed by RadNet. By the end of the 1990s, RadNet had replaced Primedex as the parent company, with many of Primedex's assets being folded into subsidiaries of RadNet. In the early 2000s RadNet acquired smaller radiology firms. The company repurchased its debt in 2005 and in 2006 worked with
General Electric General Electric Company (GE) was an American Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1892, incorporated in the New York (state), state of New York and headquartered in Boston. Over the year ...
to secure a $450 million
syndicated loan A syndicated loan is one that is provided by a group of lenders and is structured, arranged, and administered by one or several commercial banks or investment banks known as lead arrangers. The syndicated loan market is the dominant way for l ...
with which to continue its corporate acquisitions. 2006 also saw RadNet and Primedex split their stock, resulting in RadNet becoming the official parent company and Primedex becoming a subsidiary. RadNet joined the S&P 600 in November 2019, replacing American newspaper provider Gannett Co.


Operations

RadNet acquires smaller imaging centers. The company has also begun to open new outpatient centers to work with existing healthcare networks. RadNet acquired DeepHealth, a machine learning firm working to develop radiology artificial intelligence.


References

{{Reflist American companies established in 1981 Health care companies of the United States Medical imaging Companies based in Los Angeles