Star Equity Holdings, Inc. provides healthcare solutions in the United States and internationally. It operates through four segments: Diagnostic Services, Diagnostic Imaging, Building and Construction, and Real Estate and Investments. The company offers imaging and monitoring services to healthcare providers; and contract diagnostic imaging, including computerized tomography (CT), magnetic resonance imaging, positron emission tomography (PET), PET/CT, and nuclear medicine and healthcare services to cardiologists, internal medicine physicians, family practice physicians, hospitals, IDNs, and federal institutions. It also develops, sells, and maintains solid-state gamma cameras; imaging systems, such as nuclear cardiac imaging systems and general purpose nuclear imaging systems to physician offices and hospitals; and offers camera maintenance contract services. In addition, it manufactures modular housing units, structural wall panels, permanent wood foundation systems, and other engineered wood products; supplies general contractors with building materials; and manages and finances real estate assets and investments. The company was formerly known as Digirad Corporation and changed its name to Star Equity Holdings, Inc. in December 2020. Star Equity Holdings, Inc. was founded in 1985 and is headquartered in Old Greenwich, Connecticut.