Greenbrook TMS Inc., through its subsidiaries, manages a network of outpatient facilities across the United States that provide mental health services. These centers specialize in delivering Transcranial Magnetic Stimulation (TMS) therapy, an FDA-approved, non-invasive treatment for major depressive disorder and other mental health conditions, along with related psychiatric care. As of December 31, 2021, the company operated 94 wholly-owned and 55 TMS centers in various locations including Virginia, Maryland, Delaware, North Carolina, Missouri, Illinois, Ohio, Texas, Connecticut, Florida, South Carolina, Michigan, Alaska, Oregon, California, Iowa, and Massachusetts. Greenbrook TMS Inc. was founded in 2011 and has its corporate headquarters in Toronto, Canada.