Emergency Medicine staffing groups can be organized in any number of ways. Here’s Leon Adelman’s take:

• There are EDs staffed by non-physician-owned corporations. The two largest of these are Teamhealth and the restructured Envision, owned by Blackstone and a consortium of investors, respectively.
• Then there are physician-owned groups. The largest of these is USACS, but these range in size from staffing for a single ED to USACS’ 297 EDs.
• A third of EDs are staffed directly by health systems, think Medstar locally. This is probably also the category Edelman uses for academic centers, though physicians may be employed by a separate faculty practice or by the medical school instead of the hospital.

Read more at https://emworkforce.substack.com/p/state-of-the-us-emergency-medicine-677. Read closely and you’ll find a reference to Maryland.