Medulla is comprised of 800-1000 employees, with corporate headquarters in Oak Brook, IL and 150+ clinic locations in Illinois, Indiana, Wisconsin, Missouri, Kansas, Kentucky, West Virginia, Texas, Oregon, Washington, and Alaska. Chiro One Wellness Centers, a TVG-Medulla, LLC company, is a growing chiropractic care organization with 150+ clinics nationwide , providing non-invasive, drug-free care to thousands of patients each month.