Final answer:
A Management Services Organization (MSO) is an entity often owned by physicians or a hospital that provides administrative and support services to individual physician practices.
Step-by-step explanation:
The organization that is usually owned by physicians or a hospital and provides practice management (administrative and support) services to individual physician practices is known as an MSO (Management Services Organization). An MSO typically handles the non-medical aspects of running a practice, such as billing, scheduling, and other administrative functions, thereby allowing physicians to focus on patient care. This differs from an IPO (Initial Public Offering), which is a type of public stock offering, a GPWW, or a PHO (Physician-Hospital Organization), which can sometimes resemble an MSO but often includes joint ventures between hospitals and physicians with the goal of reducing costs and improving care.