About Greenbrier, TN | Urgent Care Welcome to our state-of-the-art urgent care clinic, strategically located in Greenbrier, TN, near the Burger King. Serving the communities of Greenbrier, Ridgetop, Millersville and surrounding areas, we provide a vital health resource for those seeking immediate medical attention without the need for an ER visit. Our clinic is open seven days a week with extended hours, ensuring that quality healthcare is always within your reach. We take pride in accepting most major insurances, including Medicaid and Medicare, and offer competitive self-pay options for those without insurance.